Question

Example for (a+b) = (a2+2ab+b2)​

Answer 1

Answer:

(a + b)2 = a2 + 2ab + b2 (recall that 2ab means 2 times a times b). For example 152 = (10 + 5)2 ...

Answer 2

$\huge\underline\mathcal\blue{Solution}$

(a + b) ² = a² + b² + 2ab

(4p + 5q) ²

= (4p)² + (5q)² + 2 (4p) (5q)

= 16p² + 25q² + 40 pq

Hence, (4p + 5q)² = 16p² + 25q² + 40 pq