3x2 + 10x - 8 = 0
3x2 + 12x - 2x - 8 = 0
3x(x + 4) - 2(x + 4) = 0
(3x - 2)(x + 4) = 0
So 3x - 2 = 0 or x + 4 = 0
so x = 2/3 or x = -4
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You find x. Oh! There it is!! ^ See?
They intersect at the point of: (-3/2, 11/4)
12x - 6 = 10x +2 12x - 10x = 2 + 6 2x = 8 x = 4
No solution in integers, quadratic formula gives roots as 6.73 & 3.27
Rearrange: x2 - 10x + 25 = 0ie (x - 5)(x - 5) = 0x = 5Check: x2 = 25; 10x - 25 = 50 - 25 = 25. Job done