Question

Factorise 4x2+9x2+2(4x×9x)

Answer 1

Factorise —

${4x}^{2} + {9x}^{2} + 2(4x \times 9x)$

As we know,

(a+b)² = a²+b²+2ab

The reverse of this formula is

a²+b²+2ab = (a+b)²

So, the same formula is applied here.

♦ 4x²+9x²+2(4x9x)

= (4x+9x)²

Answer 2

Answer:

(4x+9x)²

Step-by-step explanation:

As we know,

(a+b)² = a²+b²+2ab

The reverse of this formula is

a²+b²+2ab = (a+b)²

So, the same formula is applied here.

♦ 4x²+9x²+2(4x9x)

= (4x+9x)²