Question

factorize : (3a+4b) ² - (4a+5b) ²​

Answer 1

Answer:

-7a^2+9b^2+16ab

or

-(7a^2+9b^2+16ab)

Step-by-step explanation:

((3a)^2+(4b)^2+2×3a×4b)-((4a)^2+(5b)^2+2×4a×5b

(9a^2+16b^2+24ab)-(16a^2+25b^2+40ab)

9a^2+16b^2+24ab-16a^2-25b^2-40ab

-7a^2-9b^2-16ab

-(7a^2+9b^2+16ab)