x-2+4=-8 x+2=-8 x=-10
-2
x + y = 10 y = x + 8 so, x + (x + 8) = 10 2x + 8 = 10 2x + 8 - 8 = 10 - 8 2x = 2 x = 1 and y = 9 because y = x + 8 y = 1 + 8 y = 9
y - 8 = x^2 + 12x + 36 y - 8 = (x + 6)^2 y = (x + 6)^2 + 8 or f(x) = (x + 6)^2 + 8 So -h = 6 so that h = -6, and k = 8
7x + 8 = 10x - 2 ∴ 3x = 10 ∴ x = 10/3
Six equals x is the answer.
6
8
x-2+4=-8 x+2=-8 x=-10
x = 12
x = 2, y = 84x + 8y= 4(2) + 8(8)= 8 + 64= 72
The quadratic expression x2+6x+8 when factorised equals (x+2)(x+4)
x=1.6225
(3, 2)
-1
x= -5
-2