The equation 4x + 5 = 2 has the solution 4x = -3 and x = - 3/4 (minus 3/4).
Use the quadratic formula, with a = 1, b = -3, c = 2.
Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "times", "equals", "squared", "cubed". There appear to be several expressions: -2x, 2-9x, 4x and 2-81 all of which are defined.
4x - 7 = -15 4x = -8 x = -2
6x2 = -7x -2 6x2 + 7x + 2 = 0 6x2 + 3x + 4x + 2 = 0 3x(2x + 1) + 2(2x + 1) = 0 (2x + 1)(3x + 2) = 0 2x + 1 = 0 or 3x + 2 = 0 So, x = -1/2 or -2/3
4x + 20
Yes and x = 2+square root of 6 or x = 2-square root of 6
x(4x-2)
It is a quadratic expression
(2x-1)(2x-1) = 4x^2 -4x + 1
sqrt(4x+7) -4 = sqrt(4x-1) squared : (sqrt(4x+7) -4)2 = 4x-1 (4x+7) - 2x4xsqrt(4x+7) +16 = 4x-1 -8xsqrt(4x+7) = -24 sqrt(4x+7) = -24/-8 = 3 squared : 4x+7 = 32 = 9 4x = 9-7 = 2 then x=1/2
x - 2
(4x-8)(2x+2)
y=xsquared-4x+2
x = 2
2
4x^2 = 16x 16x - 60x = -44x -44x + 225