- Which of the following is the simplified form of the expression 8x2y – 5xy2 + 12xy2 – 3x2y?
A. 5x2y2 + 7x2y B. 3x2y + 9xy2 C. 5x2y + 7xy2 D. 5x2y2 + 7x2y2 E. 7x2y2 + 5x2y2
- Which of the following is the simplified form of
Answers and explanations
- The correct answer is Choice (C).
You can combine the like terms to simplify the expression. Like terms have the same variables, and each variable has the same exponent in each of the like terms.
To combine like terms, add their coefficients; the variable-and-exponent combinations that the terms have in common go to the right of the new coefficients:
- The correct answer is Choice (D).
Factor the numerator and denominator. Then cancel any expression that's a factor of the numerator and denominator.