Question

use suitable identity (7x-9)(7x-9)​

Answer 1

Answer:

=(7x-9)²

=49x²+81+126x

Answer 2

Answer:

(7x-9)(7x-9)=

${(7x - 9)}^{2}$

=(7x)^2-(2×7x×9)+(9)^2

=49x^2-126x+81

hope it helps...

plz plz mark as brainiest ❤