Expanding
Expand and simplify:
x(4-x)
4x - x2
or
-x2 + 4x
Solve the quadratic equation using the null factor law.
(x + 5)(x + 8) = 0
x = -5 or -8
Factorise the following expression.
5x + 10
5(x + 2)
Expand and simplify:
(4x + 5)(x - 2)
4x2 - 3x - 10
Use the quadratic formula to solve the following equation.
9x2 - 6x + 1 = 0
x = 1/3
Factorise the following expression.
m2 + m
m(m + 1)
Expand and simplify:
(p + 2)2
p2 + 4p + 4
Use the quadratic formula to solve the following equation.
x2 - 6x + 9
x = 3
Factorise the following expression.
x2 + 7x + 12
(x + 3)(x + 4)
Expand and simplify:
(x + 5)(x - 5)
x2 - 25
Use the quadratic formula to solve the following equation.
x2 + x = 6
x = 2 or x = -3
Factorise the following expression.
x2 - 4x - 12
(x + 2)(x - 6)
Expand and simplify:
s(s - 12)
s2 - 12s
Factorise this expression:
6x2 + x - 12
(3x-4)(2x+4)
Factorise the following expression.
x2 + 4x - 12
(x + 6)(x - 2)