Question

factorise the following
(3x+5y)^2-4z^2

Answer 1

Here, we are given two terms :-

(3x + 5y)² and 4z²

4z² = (2z)²

Now, we can use the identity
a² - b² = (a + b)(a - b)

Taking (3x + 5y) as a² and (2z)² as b² we get

(3x + 5y)² - 4z²

= (3x + 5y)² - (2z)²

= (3x + 5y + 2z)(3x + 5y - 2z)


Hence, your answer is

(3x + 5y + 2z)(3x + 5y - 2z)

Answer 2

hello here Is your answer OK


3x+5y2-4z2=3x+5y2- 2z2=3x + 5y + 2z3x + 5y - 2z


OK