Question

(a+b)? - (a-b)² =
a)2(a +b?) b) 4ab
c) None
d) (a²-b?)?​

Answer 1

Step-by-step explanation:

As you (should have) learned in algebra class:

(a+b)² = a² + 2ab + b² and (a-b)² = a² - 2ab + b².

Therefore (a+b)² - (a-b)² = (a² + 2ab + b²) - (a² - 2ab + b²).

Regrouping, we have (a+b)² - (a-b)² = (a²-a²) + (2ab-(-2ab)) + (b²-b²), which simplifies to 4ab.

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Answer 2

Answer:

…..(a+b)²-(a-b)²

…..a²+b²+2ab - (a²+b²-2ab)

…..a²+b²+2ab -a²-b²+2ab

…..2ab+2ab

…..4ab..Ans……

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