Question

Simplify b(a + b) - a(a - b).

a2 + 2ab + b2
a2 - 2ab + b2
-a2 + 2ab + b2
-a2 - 2ab - b2

Answer 1

The correct answer is: [C]: " - a² + 2ab + b² " .
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Step-by-step explanation:
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b(a + b) - a(a - b) =


ba + b² - a² + ab ;

Combine the like terms:

ba + ab = 2ab ;

Rewrite:

" - a² + 2ab + b² " ; which is: Answer choice: [C]: " - a² + 2ab + b² " .
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Answer 2

ab+b^2-a^2+ab (using distributive property)
-a^2+2ab+b^2

The 3rd option is correct.