Question

please give answer of this question step by step .​

Answer 1

Hope u understand...........

Answer 2

Answer:

$(3a-4b+5c)(3a-4b-5c)$

Step-by-step explanation:

Given expression

$9a^2-24ab+16b^2-25c^2$

$=(3a)^2-2\times (3a)\times (4b)+(4b)^2-(5c)^2$

$=(3a-4b)^2-(5c)^2$

$=(3a-4b+5c)(3a-4b-5c)$

Therefore, the given expression can be factorised as $(3a-4b+5c)(3a-4b-5c)$

Hope this helps.