Question

slove this formula by step by step
(a+b)²=(a-b)²+4ab
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Answer 1

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Correct Question:-

• Solve this formula by step by step
• (a+b)²=(a-b)²+4ab?

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Answer :-

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Step by step explanation:-

• First take LHS side

$⇒ {(a + b)}^{2} = {a}^{2} + {b}^{2} + 2ab$

• Now take RHS side

$⇒ {(a - b)}^{2} + 4ab \\ \\ ⇒ {a}^{2} + {b}^{2} - 2ab + 4ab \\ \\ ⇒ {a}^{2} + {b}^{2} + 2ab$

In above solution we first solve by using identity then by seeing sign subract it.

.•. By above L.S.H = R.H.S

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More identities:-

• $⇒(a + b)(a - b) = {a}^{2} - {b}^{2}$
• $⇒ {(a + b)}^{3} = {a}^{3} + {b}^{3} + 3ab(a + b)$

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