Question

determine the square of 5x–7​

Answer 1

Answer:

(5x-7)^2

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

25x^2-35x-35x+49

25x^2-70x+49

Step-by-step explanation:

Answer 2

Answer:

5x^2+49+2(5x)(7)

Step-by-step explanation:

$a { }^{2}+ b { }^{2} - 2ab$

that is equal to (a+b)^2