Question

Factorisation of 9y²-49 is :

Answer 1

Hope it helps...........

Answer 2

Answer:

$(3y + 7)(3y - 7)$

Step-by-step explanation:

$9y {}^{2} - 49 = (3y) {}^{2} - (7) {}^{2} = (3y + 7)(3y - 7)$

This is simply done using

$x ^{2} - y {}^{2} formula$

I hope this is the answer.

Please mark it as brainliest..☺️☺️