Question

Use suitable identity
(x+5) (x+5)

Answer 1

Answer:

$(a + b) {}^{2} = a {}^{2} + 2ab + b {}^{2} \\ (x + 5) {}^{2} = x {}^{2} + 2.x.5 + 5 { }^{2} \\ = {x}^{2} + 10x + 25.$

Answer 2

This is a identit use her

( x+a) (x+b) =x2 +(a+b) x + ab

sol : (x+5) (x +5) =x2 (a+b) x +ab