800=-5*x^2+10x+7

Simple and best practice solution for 800=-5*x^2+10x+7 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 800=-5*x^2+10x+7 equation:


Simplifying
800 = -5x2 + 10x + 7

Reorder the terms:
800 = 7 + 10x + -5x2

Solving
800 = 7 + 10x + -5x2

Solving for variable 'x'.

Combine like terms: 800 + -7 = 793
793 + -10x + 5x2 = 7 + 10x + -5x2 + -7 + -10x + 5x2

Reorder the terms:
793 + -10x + 5x2 = 7 + -7 + 10x + -10x + -5x2 + 5x2

Combine like terms: 7 + -7 = 0
793 + -10x + 5x2 = 0 + 10x + -10x + -5x2 + 5x2
793 + -10x + 5x2 = 10x + -10x + -5x2 + 5x2

Combine like terms: 10x + -10x = 0
793 + -10x + 5x2 = 0 + -5x2 + 5x2
793 + -10x + 5x2 = -5x2 + 5x2

Combine like terms: -5x2 + 5x2 = 0
793 + -10x + 5x2 = 0

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

Divide each side by '5'.
158.6 + -2x + x2 = 0

Move the constant term to the right:

Add '-158.6' to each side of the equation.
158.6 + -2x + -158.6 + x2 = 0 + -158.6

Reorder the terms:
158.6 + -158.6 + -2x + x2 = 0 + -158.6

Combine like terms: 158.6 + -158.6 = 0.0
0.0 + -2x + x2 = 0 + -158.6
-2x + x2 = 0 + -158.6

Combine like terms: 0 + -158.6 = -158.6
-2x + x2 = -158.6

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -158.6 + 1

Reorder the terms:
1 + -2x + x2 = -158.6 + 1

Combine like terms: -158.6 + 1 = -157.6
1 + -2x + x2 = -157.6

Factor a perfect square on the left side:
(x + -1)(x + -1) = -157.6

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 700=-5*x^2+10x+7 | | 1-3x=4x+5-(4-x) | | 1200=-5*x^2+10x+7 | | 1-3x=4x+5-(4-c) | | 33-2y=17 | | n^2-13n+40= | | 27=-3p^2+162p-275 | | y=-3p^2+162p-275 | | -(3x-v)+3(4v-3x)= | | y=-4x^2-3x+3 | | 10(2x-3)-2(3x+4)=32 | | 6(3+3m)= | | 14x-22=35 | | 6(3+3m)m=2 | | 9y^2-25yz-6z^2=0 | | p=16s | | 6y+15=69 | | 3x+y=156 | | 2x+7*4=-4 | | 6m+4m= | | 12x^3+6x^2-18x=0 | | 4x^2-6x-7=0 | | 3x+3(3-3)=3 | | 7x+11=4x+29 | | 8x+15=5x+24 | | 2x-3(x+8)=-21 | | 4x+10=2x+28 | | -8.68-2.9t=5.1(t+4.1) | | 5x^2+8x-165=0 | | 11(x+7)-13(x+8)=111 | | x+5x=-60 | | (100*102.32)+(x*38.9)=84.3*(100+x) |

Equations solver categories