Question

factorise (3x+7)²-36y²​

Answer 1

Answer:

(3x+7-6y) (3x+7+6y)

Step-by-step explanation:

(3x+7)²-36y²

(3x+7)²-(6y)²

(3x+7-6y)(3x+7+6y)(using a²-b²=(a+b) (a-b)

hope it will help you!!!

Answer 2

Answer:

We can use

$a { }^{2} - b {}^{2} =( a + b)(a - b)$

Step-by-step explanation:

(3x+7+36)(3x+7-36)

(3x+43)(3x-29)

$9x {}^{2} + 14x - 1247$