2x = x2 + 4x - 3
x2 + 2x - 3 = 0
(x - 1)(x - 2) = 0
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x2 + 2x - 15 = (x - 3)(x + 5)
x2 + 2x -6 = 0 x2 + 2x + 1 = 7 (x + 1)2 = 7 x = -1 ± √7
The vertex is at (-1,0).
(2x)ysquared
x2+10x+1 = -12+2x x2+10x-2x+1+12 = 0 x2+8x+13 = 0 Solving by using the quadratic equation formula: x = - 4 - or + the square root of 3