Question

(x - 5)(x + 3) = (x - 7)(x + 4)​

Answer 1

Step-by-step explanation:

taking LHS

x^2+3x-5x-15

x^2-2x-15

now taking RHS

x^2+4x-7x-28

x^2-3x-28

Answer 2

Answer:

(x - 5)(x + 3) = (x - 7)(x + 4)

x(x+3) -5(x+3) = x(x+4) -7(x+4)

x²+3x-5x-15 = x²+4x-7x-28

x²-2x-15 = x²-3x-28

-2x+3x = -28+15

x = -13