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Choose the correct simplification of the expression (−2x + 8y)(9x − 3y). −18x2 + 78xy − 24y2 18x2 + 78xy − 24y2 −18x2 − 78xy + 24y2 −18x2 + 72xy − 24y2
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Nov 4, 2017
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Choose the correct simplification of the expression (−2x + 8y)(9x − 3y).
−18x2 + 78xy − 24y2
18x2 + 78xy − 24y2
−18x2 − 78xy + 24y2
−18x2 + 72xy − 24y2
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Filippo Sebastio
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Answer:
The answer is A I just took the test
Step-by-step explanation:
Michael Bruce
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Nov 5, 2017
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For these kinds of expressions use FOIL (first, outside, inside, last).
-2x • 9x = -18x^2
-2x • -3y = 6xy
8y • 9x = 72 xy
8y • -3y = -24y^2
Now combine them all:
-18x^2 + 78xy - 24y^2
Gatonito
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Nov 8, 2017
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