(5x + 1)(x + 17)= 5x(x + 17) + 1(x + 17)= 5x^2 + 85x + x + 17= 5x^2 + 86x + 17
(x² + 25x)(-6 + x)= x^2(-6) + 25x(-6) + x(-6) + 25x^2= -6x^2 - 150x - 6x + 25x^2= -6x^2 + 25x^2 - 150x - 6x= 19x^2 - 156x
(3y - 6)(3y + 7)= 3y(3y + 7) - 6(3y + 7)= 9y^2 + 21y - 18y - 42= 9y^2 + 3y - 42
(ab + 8a)(9b - 6a)= ab(9b - 6a) + 8a(9b - 6a)= 9ab^2 - 6a^2b + 72ab - 48a^2= 9ab^2 + 72ab - 6a^2b - 48a^2
(5x + 1)(x + 17)
= 5x(x + 17) + 1(x + 17)
= 5x^2 + 85x + x + 17
= 5x^2 + 86x + 17
(x² + 25x)(-6 + x)
= x^2(-6) + 25x(-6) + x(-6) + 25x^2
= -6x^2 - 150x - 6x + 25x^2
= -6x^2 + 25x^2 - 150x - 6x
= 19x^2 - 156x
(3y - 6)(3y + 7)
= 3y(3y + 7) - 6(3y + 7)
= 9y^2 + 21y - 18y - 42
= 9y^2 + 3y - 42
(ab + 8a)(9b - 6a)
= ab(9b - 6a) + 8a(9b - 6a)
= 9ab^2 - 6a^2b + 72ab - 48a^2
= 9ab^2 + 72ab - 6a^2b - 48a^2