Question

(5x-1)(x+3)=(x-5)(5x+1)+40​

Answer 1

Answer:

5x (x +3)-1(x+3)

Step-by-step explanation:

5x square +15x - x -3

I hope it is the correct answer

Answer 2

Answer:

1

Step-by-step explanation:

5x^2 + 15x - x -3 = 5x^2 +x -25x -5 +40

14x-3 = -24x +35

38x = 38

x=1