10=-5x^2+15x+1

Simple and best practice solution for 10=-5x^2+15x+1 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 10=-5x^2+15x+1 equation:


Simplifying
10 = -5x2 + 15x + 1

Reorder the terms:
10 = 1 + 15x + -5x2

Solving
10 = 1 + 15x + -5x2

Solving for variable 'x'.

Combine like terms: 10 + -1 = 9
9 + -15x + 5x2 = 1 + 15x + -5x2 + -1 + -15x + 5x2

Reorder the terms:
9 + -15x + 5x2 = 1 + -1 + 15x + -15x + -5x2 + 5x2

Combine like terms: 1 + -1 = 0
9 + -15x + 5x2 = 0 + 15x + -15x + -5x2 + 5x2
9 + -15x + 5x2 = 15x + -15x + -5x2 + 5x2

Combine like terms: 15x + -15x = 0
9 + -15x + 5x2 = 0 + -5x2 + 5x2
9 + -15x + 5x2 = -5x2 + 5x2

Combine like terms: -5x2 + 5x2 = 0
9 + -15x + 5x2 = 0

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

Divide each side by '5'.
1.8 + -3x + x2 = 0

Move the constant term to the right:

Add '-1.8' to each side of the equation.
1.8 + -3x + -1.8 + x2 = 0 + -1.8

Reorder the terms:
1.8 + -1.8 + -3x + x2 = 0 + -1.8

Combine like terms: 1.8 + -1.8 = 0.0
0.0 + -3x + x2 = 0 + -1.8
-3x + x2 = 0 + -1.8

Combine like terms: 0 + -1.8 = -1.8
-3x + x2 = -1.8

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 = -1.8 + 2.25

Reorder the terms:
2.25 + -3x + x2 = -1.8 + 2.25

Combine like terms: -1.8 + 2.25 = 0.45
2.25 + -3x + x2 = 0.45

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 0.45

Calculate the square root of the right side: 0.670820393

Break this problem into two subproblems by setting 
(x + -1.5) equal to 0.670820393 and -0.670820393.

Subproblem 1

x + -1.5 = 0.670820393 Simplifying x + -1.5 = 0.670820393 Reorder the terms: -1.5 + x = 0.670820393 Solving -1.5 + x = 0.670820393 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 = 0.670820393 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 0.670820393 + 1.5 x = 0.670820393 + 1.5 Combine like terms: 0.670820393 + 1.5 = 2.170820393 x = 2.170820393 Simplifying x = 2.170820393

Subproblem 2

x + -1.5 = -0.670820393 Simplifying x + -1.5 = -0.670820393 Reorder the terms: -1.5 + x = -0.670820393 Solving -1.5 + x = -0.670820393 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 = -0.670820393 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -0.670820393 + 1.5 x = -0.670820393 + 1.5 Combine like terms: -0.670820393 + 1.5 = 0.829179607 x = 0.829179607 Simplifying x = 0.829179607

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.170820393, 0.829179607}

See similar equations:

| 4x^5+10x^4-100x^3+2=0 | | 8-4x^3=0 | | 6x+2=-40 | | 24.55=3s+3.75 | | y+5=3x-9 | | -8+14q= | | 1.125=g-2.8 | | -5=6k | | 3x+48x=91 | | -29=5(2a-1)+2d | | -12+30= | | 1+5x=-7x+1 | | 9x+45y= | | 9h-7h+7-8= | | .1p-.2p+2=-4.6 | | 2x-9y=-13 | | 15r-2=s | | 71/4-25/8=x | | k-3=55 | | 6x-2y+2x-y= | | 0.50x+15=4x-13 | | 125=12+5x | | m-80=45 | | 60+(-6)= | | g-5/5=3/5 | | 8(2p^2+25p-517)=0 | | 2x^8+3x^4-2=0 | | h+-8.5=-0.6 | | 5*x+32=3*x-4 | | 5x-7=4x-14 | | 30+8n=3(3+5n) | | -4(-2a-3)-2(8a+4)=-5a+a |

Equations solver categories