Question

Expand the following:
a) x(x + 6)
b) x(5x - 1)
c) 3x(6x + 5)
d) 4x(2x – 3y)​

Answer 1

a) x(x + 6) = x · x + x · 6 = x² + 6x

b) x(5x - 1) = x · 5x - x · 1 = 5x² - x

c) 3x(6x + 5) = 3x · 6x + 3x · 5 = 18x² + 15x

d) 4x(2x – 3y)​ = 4x · 2x - 4x · 3y = 8x²-12xy