Without an equality sign and not knowing the plus or minus values of 1 and 2 the value of x can't be worked out
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If you mean: y = kx +1 and y^2 = 8x So if: y = kx +1 then y^2 = k^2*x^2 +2kx +1 If: y^2 = 8x then k^2*x^2 +2kx +1 = 8x Transposing terms: k^2*x^2 +2kx +1 -8x = 0 Using the discriminant: (2k -8)^2 -4*(k^2*1) = 0 Solving the discriminant: k = 2
0.25
8x - 1 = 11 8x = 12 x = 12 / 8 or x = 3 / 2.
if its -8x+16=0 x=2 if its -8x-16=0 x=-2 if its -8x=16 x=-2
8x^2 + 6x - 5 = 8x^2 + 10x - 4x - 5 = 2x * (4x + 5) - (4x + 5) = (2x -1) * (4x + 5)