Question

a^2+b^2-a^2+b^2 using identity​

Answer 1

Answer:

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Answer 2

Answer:

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

$using \: identity ({x}^{2} - {y}^{2} ) =( x - y)(x + y) \\ here \: x = (a + b) \: and \: y = (a - b)$