6x + 10 = 72 6x = 72 - 10 x = 62/6 x = 10.3333
2x2+6x-8 = 72 2x2+6x-8-72 = 0 2x2+6x-80 = 0 (2x-10)(x+8) = 0
(x + 12)(x - 6) = 0 x = 6 or -12
5x + x - 6x + 2x = 2x
The quadratic expression x2+6x+8 when factorised equals (x+2)(x+4)
6x + 10 = 72 6x = 72 - 10 x = 62/6 x = 10.3333
x2 + 6x + 9 = 81 x2 + 6x = 72 x2 + 6x - 72 = 0 (x+12)(x-6) = 0 x= -12, 6 (two solutions)
2x2+6x-8 = 72 2x2+6x-8-72 = 0 2x2+6x-80 = 0 (2x-10)(x+8) = 0
(x + 12)(x - 6) = 0 x = 6 or -12
6x+x = 7x
x squared x2
5x + x - 6x + 2x = 2x
6x
The quadratic expression x2+6x+8 when factorised equals (x+2)(x+4)
Using the quadratic equation formula the value of x is -8 or 5
If: 9x+7 = 6x+25 Then: x = 6
x=10