Solving by factoring
Solve this quadratics by factoring.
x2 + 2x = 3
x2 + 2x - 3 = 0
= (x-1)(x+3) = 0
x = 1 or x = -3
Solve this equation by taking square roots.
x2 - 81 = 0
x = 9 and -9
(v +3)2 + 4 = 5
{-2,-4}
Solve this quadratic equation by factoring.
X2 + 16 = 10x
x2 - 10x + 16 =0
(x-2)(x-8)
x = 2 or x = 8
Solve this equation by taking square roots.
(x+1)2 = 121
x = 10 and -12
2n2-n-4=2
{3/2 ,1}
Solve this quadratics equation by factoring.
6x2 - x = 2
6x2 - x - 2 = 0
= (3x -2)(2x +1)= 0
= 3x -2 = 0 2x + 1 = 0
x = 2/3 or x -1/2
Solve this equation by taking square roots.
x2 + 1 = 25
x2 = 24
x= 2 sqrt(6), -2 sqrt(6)
3x2+2 =8
{sqrt(2),-sqrt(2)}
Solve this quadratics equation by factoring.
8x2 + 3 = 10
8x2 - 10x + 3 = 0
(4x- 3)(2x - 1)
x = 3/4 and 1/2
Solve this equation by taking square roots.
(x-4)2 - 16 = 0
(x-4)2 = 16
x- 4 =± 4
x = 0 or 8
x2-11x+19=-5
{3,8}