9x^2+2x-10=0

Simple and best practice solution for 9x^2+2x-10=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 9x^2+2x-10=0 equation:


Simplifying
9x2 + 2x + -10 = 0

Reorder the terms:
-10 + 2x + 9x2 = 0

Solving
-10 + 2x + 9x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
9 the coefficient of the squared term: 

Divide each side by '9'.
-1.111111111 + 0.2222222222x + x2 = 0

Move the constant term to the right:

Add '1.111111111' to each side of the equation.
-1.111111111 + 0.2222222222x + 1.111111111 + x2 = 0 + 1.111111111

Reorder the terms:
-1.111111111 + 1.111111111 + 0.2222222222x + x2 = 0 + 1.111111111

Combine like terms: -1.111111111 + 1.111111111 = 0.000000000
0.000000000 + 0.2222222222x + x2 = 0 + 1.111111111
0.2222222222x + x2 = 0 + 1.111111111

Combine like terms: 0 + 1.111111111 = 1.111111111
0.2222222222x + x2 = 1.111111111

The x term is 0.2222222222x.  Take half its coefficient (0.1111111111).
Square it (0.01234567901) and add it to both sides.

Add '0.01234567901' to each side of the equation.
0.2222222222x + 0.01234567901 + x2 = 1.111111111 + 0.01234567901

Reorder the terms:
0.01234567901 + 0.2222222222x + x2 = 1.111111111 + 0.01234567901

Combine like terms: 1.111111111 + 0.01234567901 = 1.12345679001
0.01234567901 + 0.2222222222x + x2 = 1.12345679001

Factor a perfect square on the left side:
(x + 0.1111111111)(x + 0.1111111111) = 1.12345679001

Calculate the square root of the right side: 1.059932446

Break this problem into two subproblems by setting 
(x + 0.1111111111) equal to 1.059932446 and -1.059932446.

Subproblem 1

x + 0.1111111111 = 1.059932446 Simplifying x + 0.1111111111 = 1.059932446 Reorder the terms: 0.1111111111 + x = 1.059932446 Solving 0.1111111111 + x = 1.059932446 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1111111111' to each side of the equation. 0.1111111111 + -0.1111111111 + x = 1.059932446 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + x = 1.059932446 + -0.1111111111 x = 1.059932446 + -0.1111111111 Combine like terms: 1.059932446 + -0.1111111111 = 0.9488213349 x = 0.9488213349 Simplifying x = 0.9488213349

Subproblem 2

x + 0.1111111111 = -1.059932446 Simplifying x + 0.1111111111 = -1.059932446 Reorder the terms: 0.1111111111 + x = -1.059932446 Solving 0.1111111111 + x = -1.059932446 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.1111111111' to each side of the equation. 0.1111111111 + -0.1111111111 + x = -1.059932446 + -0.1111111111 Combine like terms: 0.1111111111 + -0.1111111111 = 0.0000000000 0.0000000000 + x = -1.059932446 + -0.1111111111 x = -1.059932446 + -0.1111111111 Combine like terms: -1.059932446 + -0.1111111111 = -1.1710435571 x = -1.1710435571 Simplifying x = -1.1710435571

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.9488213349, -1.1710435571}

See similar equations:

| 3,5x-11,5=5,5-30,5 | | x-9=-15+3 | | 4x-9y=11 | | y=1-3x-1 | | 5t+12=12t | | 200x-0.78=400x+0.34 | | -3x^2-3x=11 | | -4-(-11)=7 | | 3.7x-52=2.1x+4 | | 3x-6x+x-3+4x= | | 2.6=10x+1.7 | | -0.06x=-1.2 | | 37=4(x+7)-7x | | y-9.4=1 | | 5x^2-42x-80=0 | | 0=x^2-13x+42 | | 8(v+3)-2v=3(2v+1)-4 | | 1.8x+2-7.8x=8 | | 4x^2+8x+37=0 | | 7x-43.2=x | | -(x-2)-14=2(x+5) | | 0.9x+0.8=-1.9 | | x+19+3x=83 | | 0=2x^2+3x-2 | | 2(4x+1)=8x+2 | | -(3u-y)-5(6y-4u)= | | T^2=-5T | | -7-17+25=15 | | 7y-6-2y+4=0 | | 15-4r=-2 | | 0=4x^2+12x+9 | | 3(x-9.7)=6.6 |

Equations solver categories