Question 799668
(3x + 5)(5x - 1)= 15x^2 + 22x - 5
(20x^2 + 25x + 10) - (15x^2 + 22x - 5)
20x^2 + 25x + 10 - 15x^2 - 22x + 5
= 5x^2 + 3x + 15
Hope this helps.
:-)