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Algebra: Expert Guides and Resources
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Articles & Books From Algebra
Feel confident in Algebra I Algebra I For Dummies, 3rd Edition is your clear guide to grasping basic algebra. With the easy-to-follow explanations in this book, you’ll understand variables, polynomials, absolute value, linear equations, and beyond. The content matches right up with Algebra I curricula and teaching methods, so you can follow right along in class and shine at exam time.
Article / Updated 05-30-2024
A matrix is a rectangular array of numbers. Each row has the same number of elements, and each column has the same number of elements. Matrices can be classified as: square, identity, zero, column, and so on.Where did matrices come from? For most of their history, they were called arrays. There are references to arrays in Chinese, French, Italian, and many other mathematical works going back many hundreds of years.
Article / Updated 08-28-2023
When you want to count up how many things are in a set, you have quite a few options. When the set contains too many elements to count accurately, you look for some sort of pattern or rule to help out. Here, you practice the multiplication property. If you can do task one in m1 ways, task two in m2 ways, task three in m3 ways, and so on, then you can perform all the tasks in a total of m1 · m2 · m3 .
Article / Updated 07-05-2023
In algebra, an improper fraction is one where the numerator (the number on the top of the fraction) has a value greater than or equal to the denominator (the number on the bottom of the fraction) — the fraction is top heavy.Improper fractions can be written as mixed numbers or whole numbers — and vice versa. For example, Practice questions Change the mixed numberto an improper fraction.
Cheat Sheet / Updated 06-22-2023
Here it is. You have this All-in-One reference for concepts and formulas occurring in Algebra II. The material here is grouped by general algebraic content to make it easier to find what you need. The formulas have the standard mathematical format with variables appearing as x, y, and z and the constant numbers appearing as letters at the beginning of the alphabet.
Article / Updated 06-05-2023
In algebra, the distributive property is used to perform an operation on each of the terms within a grouping symbol. The following rules show distributing multiplication over addition and distributing multiplication over subtraction: Practice questions –3(x – 11) = ? Answers and explanations The correct answer is –3x + 33.
Article / Updated 12-21-2022
So, what is an exponent anyway? According to the Oxford dictionary, an exponent is defined as "a quantity representing the power to which a given number or expression is to be raised, usually expressed as a raised symbol beside the number or expression." Exponents are used in almost all levels of math, from algebra to calculus to physics.
Every intermediate algebra lesson, example, and practice problem you need in a single, easy-to-use reference Algebra II can be a tough nut to crack when you first meet it. But with the right tools…well, she's still tough but she gets a heckuva lot easier to manage. In Algebra II All-in-One For Dummies you'll find your very own step-by-step roadmap to solving even the most challenging Algebra II problems, from conics and systems of equations to exponential and logarithmic functions.
Article / Updated 08-17-2022
Scientific notation is a standard way of writing very large and very small numbers so that they're easier to both compare and use in computations. To write in scientific notation, follow the formwhere N is a number between 1 and 10, but not 10 itself, and a is an integer (positive or negative number).You move the decimal point of a number until the new form is a number from 1 up to 10 (N), and then record the exponent (a) as the number of places the decimal point was moved.
Challenging and fun problems on every topic in a typical Algebra II course Algebra II: 1001 Practice Problems For Dummies gives you 1,001 opportunities to practice solving problems on all the major topics in Algebra II—in the book and online! Get extra help with tricky subjects, solidify what you’ve already learned, and get in-depth walk-throughs for every problem with this useful book.
