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Choose the correct simplification of the expression (−2x + 8y)(9x − 3y). −18x^2 + 78xy − 24y^2 18x^2 + 78xy − 24y^2 −18x^2 − 78xy + 24y^2 −18x^2 + 72xy − 24y^2
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Use FOIL
I understand its foil but ive tried to solve it and don't get the right answer
What is F: -2x(9x) ?
yes -18
(-2x)(9x)=-18x^2
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okay so next is -2x(-3y)
-2x(-3y)= 6xy
yes
then is it -2x(8y)?
No. After Outer, do Inner which is (8y)(9x)
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72xy then one more which is -2x(8y)?
or no 8y(-3y)
equals -24^2 so is D
yes. (8y)(-3y)
can you help me with one more?
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