Solve for x root 6x 7 2x 7 0
Asked by admin @ in Math viewed by 442 People
Solve for x: under root 6x+7 - (2x-7) =0
Answered by admin @
√(6x + 7) - (2x -7) =0
√(6x + 7) = (2x -7)
take square both sides
6x + 7 = (2x - 7)^2 = 4x^2 -28x +49
4x^2 -34x +42 =0
2x^2 -17x +21 =0
2x^2 -14x -3x +21 =0
2x(x - 7) -3(x - 7) =0
(2x -3)(x - 7) =0
x = 3/2 and 7
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