Best Answer

You cannot, in general, solve one equation with two unknown variables.

x - y = x - x2

Subtract x from both sides: - y = - x2

Change signs: y = x2

And that is as far as you can go.

Q: How do you solve this equation for x - y equals x - x2?

Write your answer...

Submit

Still have questions?

Continue Learning about Math & Arithmetic

x(x - 1) = x2 + x x2 - x = x2 + x The only solution to this equation is x = 0

Using the quadratic equation formula:- x = 3.795831523 or x = -5.795831523

Equals anything... x is a variable. If that equation was set equal to zero then you could solve for x, but that is not what you have asked.

If 3x - 1 = 11: To solve this equation, add 1 to each side of the equation to isolate x (3x -1 +1 = 11 + 1) and now the equation is 3x = 12. The next step is to divide both sides of the equation by 3 to find the value of x (3x / 3 = 12 / 3) for the answer x = 4. Not sure what you mean by x2 x, but you can substitute the value of x (which is 4) to solve.

x=18

Related questions

Divide both sides of the equation by x: x2 = 9x x2 / x = 9x / x x = 9

x(x - 1) = x2 + x x2 - x = x2 + x The only solution to this equation is x = 0

Using the quadratic equation formula:- x = 3.795831523 or x = -5.795831523

Equals anything... x is a variable. If that equation was set equal to zero then you could solve for x, but that is not what you have asked.

X2 = k Take square root each side. X = (+/-) sqrt(k) ============

If 3x - 1 = 11: To solve this equation, add 1 to each side of the equation to isolate x (3x -1 +1 = 11 + 1) and now the equation is 3x = 12. The next step is to divide both sides of the equation by 3 to find the value of x (3x / 3 = 12 / 3) for the answer x = 4. Not sure what you mean by x2 x, but you can substitute the value of x (which is 4) to solve.

X(X2 - X)

y=b+x+x^2 This is a quadratic equation. The graph is a parabola. The quadratic equation formula or factoring can be used to solve this.

x=18

x: x2 - 81 = 0

Factor the original equation to get (x-7)(x+2)=0, so x=7 or x=-2

x2+x-15 = 0 Using the quadratic equation formula: x = 3.405124838 or x = -4.405124838