Question

${4a + b}^{2}$
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Answer 1

$\underline{\underline{ \huge \red{ \mathfrak{AnSwer}}}}$

(4a + b)²

now, by using identity

• (a + b)² = a² + b² + 2ab

➪ (4a)² + b² + 2 × 4a × b

➪ 16a² + b² + 8ab

so, answer is 16a² + b² + 8ab

Answer 2

Answer:

(4a+b)^2

now, by using identity

(a+b)^2=a^2+b^2+2ab

=(4a)^2+b^2+2×4a×b

=16a^2+b^2+8ab

So, answer is 16a^2+b^2+8ab

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