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Which expression is equivalent to -28xy + 35y?

 

 Mar 16, 2021
 #1
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(a)  7y(-4xy + 5) = (7y* -4xy) + (7y*5) = -28xy2 + 35y

 

(b) 7x(-4x + 5y) = (7x* -4x) + (7x*5y) = -28x2 + 35xy

 

(c) 7x(-4y + 5y) = (7x* -4y) + (7xx*5y) = -28xy + 35xy

 

(d) 7y(-4x + 5) = (7y* -4x) + (7y*5) = -28xy + 35y

 

 

So, the bottom-most option is the right answer.

 Mar 16, 2021

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