Question

find using suitable identities
a.(5a-7b)(5a-7b)​

Answer 1

Step-by-step explanation:

(a-b)(a-b)

(a-b)^2

apply in question

(5a-7b)^2

25a^2 + 49b^2 - 70ab

mark as brainlist and follow me

Answer 2

Answer:

${5a}^{2} - {7b}^{2}$

Step-by-step explanation:

By the Formula of

$( {a}^{2} - {b}^{2} )$

by the given formula