Quadratics

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How to Identify a Quadratic Expression

You can identify quadratic expressions easily with these tips. You can identify a quadratic expression (or second-degree expression) because it's an expression that has a variable that's squared and no [more…]

How to Factor a Quadratic Expression

Factor a quadratic expression to make it easier to work with. Some quadratic expressions can be made better by factoring, by finding a greatest common factor. If the terms in the quadratic have something [more…]

Basics of FOILing

FOIL stands for the process of multiplying two binomials. although the steps don't have to be done in this order, they usually are. The letters in FOIL refer to two terms — one from each of two binomials [more…]

How to Multiply Binomials Using the FOIL Method

FOIL is the process of multiplying two binomials in a particular order. You don't have to multiply binomials by following the FOIL order, but it does make the process easier. [more…]

How to Factor a Trinomial by UnFOILing

UnFOILing is factoring a trinomial, such as ax2 + bx + c, into two binomials. When you multiply two binomials together, you use the FOIL method, multiplying the [more…]

Standard Equations of Algebraic Conics

Conics are curved algebraic forms that come from slicing a cone with a plane. Use these equations to graph algebraic conics, such as circles, ellipses, parabolas, and hyperbolas: [more…]

Algebra’s Quadratic Formula

You can find solutions for quadratic equations by factoring, completing the square, guessing, or everyone's favorite — using the quadratic formula. The best thing about the quadratic formula [more…]