Question

correct the following:
is (a + b)2=a2-2ab +b2

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Answer 1

Answer:

Correct formula is :-

(a + b)² = a² + 2ab + b²

some more formulas, you should remember :-

• (a-b)² = a² - 2ab +b²
• a² - b² = (a+b)(a-b)
• a²+b² = (a-b)² + 2ab or (a+b)²-2ab

hope it helps.

Answer 2

Answer:

a2+2ab +b2

Step-by-step explanation:

It s not -2ab

It s +2ab