Question

factorise : √7 x^2+9x+2√7

Answer 1

√7x² + 9x + 2√7
⇒√7x² + 7x + 2x + 2√7
⇒√7x(x + √7) + 2(x + √7)
⇒(√7x + 2)(x + √7)

Hope it helps!

Answer 2

⇒√7x²+9x+2√7

⇒√7x²+2x+7x+2√7

⇒x(√7x+2)+√7(√7x+2)

⇒(√7x+2)(x+√7)