-7-3x+x^2=0

Simple and best practice solution for -7-3x+x^2=0 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for -7-3x+x^2=0 equation:


Simplifying
-7 + -3x + x2 = 0

Solving
-7 + -3x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '7' to each side of the equation.
-7 + -3x + 7 + x2 = 0 + 7

Reorder the terms:
-7 + 7 + -3x + x2 = 0 + 7

Combine like terms: -7 + 7 = 0
0 + -3x + x2 = 0 + 7
-3x + x2 = 0 + 7

Combine like terms: 0 + 7 = 7
-3x + x2 = 7

The x term is -3x.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3x + 2.25 + x2 = 7 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 7 + 2.25

Combine like terms: 7 + 2.25 = 9.25
2.25 + -3x + x2 = 9.25

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 9.25

Calculate the square root of the right side: 3.041381265

Break this problem into two subproblems by setting 
(x + -1.5) equal to 3.041381265 and -3.041381265.

Subproblem 1

x + -1.5 = 3.041381265 Simplifying x + -1.5 = 3.041381265 Reorder the terms: -1.5 + x = 3.041381265 Solving -1.5 + x = 3.041381265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 3.041381265 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 3.041381265 + 1.5 x = 3.041381265 + 1.5 Combine like terms: 3.041381265 + 1.5 = 4.541381265 x = 4.541381265 Simplifying x = 4.541381265

Subproblem 2

x + -1.5 = -3.041381265 Simplifying x + -1.5 = -3.041381265 Reorder the terms: -1.5 + x = -3.041381265 Solving -1.5 + x = -3.041381265 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -3.041381265 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -3.041381265 + 1.5 x = -3.041381265 + 1.5 Combine like terms: -3.041381265 + 1.5 = -1.541381265 x = -1.541381265 Simplifying x = -1.541381265

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.541381265, -1.541381265}

See similar equations:

| x(0.13)+x=2254.80 | | -26b=-208 | | 10+x=136.95 | | (2x-6)(x+8)=0 | | 3a+4b-7a+6b= | | -2y-34=5y-18 | | 11x-5=X+65 | | 6x-3=6(x+5) | | 130=w-3w | | 3-2x=-17+18x | | 4x+24=6-2x | | 3x+12-.8x=3.4-.8x-9.4 | | 3(x-8)+9=-15 | | 3(y-2)=5y+6-2y | | 1x+6=2x+3 | | x^2+y^2+4x+6y-40=0 | | 5728=9x-54(7x) | | T=5*3.14*y | | 1.3+5x-.1=-1.2-3x | | A+12+4a+18=180 | | 3.5+2x=2+5x | | 5c+5=3c+9 | | -6x-3+2-6=-53 | | 27=t+t+3t | | (2x)(8x^9y)(0)= | | 2+5x-.3=4x+2 | | Cos(X+45)=cosx | | 5x+2=7x+9 | | 15-x=x+1 | | 24z+168=108z | | 3-4q=-10q+10 | | 49w+42=2w+136 |

Equations solver categories