Question

( 5x – 7) ( 5x – 7).
. solve using suitable Identity​

Answer 1

Answer:

ok

Step-by-step explanation:

(5x-7)(5x-7)

25x²-35x-35x-49

25x²+70x-49

Answer 2

$\large \sf \: (5x - 7)(5x - 7) \\ \large \sf \:$

Multiply 5x-7 and 5x-7 to get $\sf \left(5x-7\right)^{2}$.

$\large \sf \: \left(5x-7\right)^{2} \:$

Use binomial theorem $\sf \left(a-b\right)^{2}=a^{2}-2ab+b^{2}$ to expand $\sf \left(5x-7\right)^{2}$.

$\large \sf \green{25x^{2}-70x+49 }$