The additive inverse is x5 + 2x - 2.
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x=(y-3)/2
do you mean y = 2x + 8 ? the inverse is y = (x - 8)/2
x10 = x5.x5 = (x5)2 [x power five whole squared] Equation is x10 + x5 - 2 Replacing x10 (x5)2+x5 - 2 Substituting x5 by Y Equation becomes Y2 + Y - 2 = 0 Y2 + 2Y - Y - 2 = 0 Y(Y + 2) - 1(Y+2) = 0 (Y-1)(Y+2) = 0 The values of Y are 1 and -2 Y = x5 = 1 Therefore, x = 1 Y = x5 = -2 x = fifth root of -2, which is an imaginary value.
The solution to the equation 2x plus 2 is 2(x + 1).
3x + 5x = 2x + 28x = 2x + 26x = 2x = (2/6) = 1/3