Taking the common factor out of brackets
Answers are for parents and teachers.
1
Factor 20x³ - 15x².
5x²(4x - 3)
2
Factor a(b - 2) + 3(b - 2).
(b - 2)(a + 3)
3
Factor 2x(m - n) - 3y(n - m).
(m - n)(2x + 3y)
4
Compute 85 · 17 - 85 · 7 in a convenient way.
850
5
Solve 3x² - 12x = 0 by factoring.
x = 0 or x = 4