Question

Factorize
(5b-4)^2-4b^2​

Answer 1

Answer:

$(5b - 4)^{2} - 4b^{2} = (5b - 4)^{2} - (2b) ^{2} = (5b - 4 - 2b)(5b - 4 + 2b) = (3b - 4)(7b - 4)$

Answer 2

Answer:

(5b) ^2-(4) ^2-4b^2

25b^2-16-16b^2

9b^2-16