(9x^2+3x+-7)+-1(5x^2+4x+-12)=

Simple and best practice solution for (9x^2+3x+-7)+-1(5x^2+4x+-12)= 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+3x+-7)+-1(5x^2+4x+-12)= equation: 


Simplifying
(9x2 + 3x + -7) + -1(5x2 + 4x + -12) = 0

Reorder the terms:
(-7 + 3x + 9x2) + -1(5x2 + 4x + -12) = 0

Remove parenthesis around (-7 + 3x + 9x2)
-7 + 3x + 9x2 + -1(5x2 + 4x + -12) = 0

Reorder the terms:
-7 + 3x + 9x2 + -1(-12 + 4x + 5x2) = 0
-7 + 3x + 9x2 + (-12 * -1 + 4x * -1 + 5x2 * -1) = 0
-7 + 3x + 9x2 + (12 + -4x + -5x2) = 0

Reorder the terms:
-7 + 12 + 3x + -4x + 9x2 + -5x2 = 0

Combine like terms: -7 + 12 = 5
5 + 3x + -4x + 9x2 + -5x2 = 0

Combine like terms: 3x + -4x = -1x
5 + -1x + 9x2 + -5x2 = 0

Combine like terms: 9x2 + -5x2 = 4x2
5 + -1x + 4x2 = 0

Solving
5 + -1x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
1.25 + -0.25x + x2 = 0

Move the constant term to the right:

Add '-1.25' to each side of the equation.
1.25 + -0.25x + -1.25 + x2 = 0 + -1.25

Reorder the terms:
1.25 + -1.25 + -0.25x + x2 = 0 + -1.25

Combine like terms: 1.25 + -1.25 = 0.00
0.00 + -0.25x + x2 = 0 + -1.25
-0.25x + x2 = 0 + -1.25

Combine like terms: 0 + -1.25 = -1.25
-0.25x + x2 = -1.25

The x term is -0.25x.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25x + 0.015625 + x2 = -1.25 + 0.015625

Reorder the terms:
0.015625 + -0.25x + x2 = -1.25 + 0.015625

Combine like terms: -1.25 + 0.015625 = -1.234375
0.015625 + -0.25x + x2 = -1.234375

Factor a perfect square on the left side:
(x + -0.125)(x + -0.125) = -1.234375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 2/3*x=46 | | 3x-5(x-6)=20-2x | | 5x+8y=17 | | 0.3h-4(0.67h-3)=0.67h-6 | | f(0)=0.01x^2+0.06x+31.2 | | 48bx-24bz-12cx+6cz= | | f(x)=0.01x^2+0.06x+31.2 | | 14x^3y^2-6x^3y-10x^2y=0 | | 4x+15=4x-11-3 | | -4n+5n=3+6n | | 11x-2y=17 | | 5x^2+70x+245=0 | | ln(x+1)+ln(x-2)=ln(4) | | 3(5+17)= | | 4+2p=15-5 | | 58x-136=-70 | | 6Y-24X=7 | | (1+I)+(3+I)= | | 16x=6.40x | | 4x-9=4x-10-9 | | 2t^2-6t+1=0 | | 22-3y=7 | | (9x^2+3x-7)-(5x^2+4x-12)= | | 2t^4-3t^3-4t+6=0 | | 10b+a=10a+b(5x+1) | | 5n+10n-7=20n+2n+1 | | 5x+3=9+4 | | 96t-16t^2+1152=0 | | 6x=3y-18 | | 0.5-x+3.5=x+6 | | 4n-2=14-2n | | (6x^3+3x)(x^2+4)= |

Equations solver categories