Simplify: (4x2 + 8xy + 2y2) − (−9x2 − 4xy − 7y2)
5x2 + 4xy − 5y2
−5x2 − 4xy + 9y2
13x2 + 12xy + 9y2
13x2 − 12xy + 5y2

my answer is$ 12

step-by-step explanation:

because 15 -2=12

6 spoons of sugar for every 21 cups of flour

step-by-step explanation:

3. (5x + 1) - (-10x + 6)

simplify the answer choice. combine like terms. remember to distribute the negative to the terms inside the second parenthesis. also remember that two negatives = one positive, and one of each sign = negative.

- (-10x + 6) = + 10x - 6

simplify. combine like terms:

5x + 1 + 10x - 6

5x + 10x + 1 - 6

15x - 5

∴ it is your answer

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8

step-by-step explanation: