(4x^2)-9x=-15

Simple and best practice solution for (4x^2)-9x=-15 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 (4x^2)-9x=-15 equation:


Simplifying
(4x2) + -9x = -15

Reorder the terms:
-9x + (4x2) = -15

Solving
-9x + (4x2) = -15

Solving for variable 'x'.

Reorder the terms:
15 + -9x + (4x2) = -15 + 15

Combine like terms: -15 + 15 = 0
15 + -9x + (4x2) = 0

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

Divide each side by '4'.
3.75 + -2.25x + x2 = 0

Move the constant term to the right:

Add '-3.75' to each side of the equation.
3.75 + -2.25x + -3.75 + x2 = 0 + -3.75

Reorder the terms:
3.75 + -3.75 + -2.25x + x2 = 0 + -3.75

Combine like terms: 3.75 + -3.75 = 0.00
0.00 + -2.25x + x2 = 0 + -3.75
-2.25x + x2 = 0 + -3.75

Combine like terms: 0 + -3.75 = -3.75
-2.25x + x2 = -3.75

The x term is -2.25x.  Take half its coefficient (-1.125).
Square it (1.265625) and add it to both sides.

Add '1.265625' to each side of the equation.
-2.25x + 1.265625 + x2 = -3.75 + 1.265625

Reorder the terms:
1.265625 + -2.25x + x2 = -3.75 + 1.265625

Combine like terms: -3.75 + 1.265625 = -2.484375
1.265625 + -2.25x + x2 = -2.484375

Factor a perfect square on the left side:
((x) + -1.125)((x) + -1.125) = -2.484375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 27x+18= | | 0.4(2z+6)+11.2=0.6(2z-4) | | 0.6(x+200)=0.64x-184 | | xfois(17-2x)=21 | | 70-12b+12=10 | | 3.8x=2.8x+9.0 | | xX(17-2x)=21 | | 6x+7.2-2x=2.4 | | -10/-2=0 | | m-3/8=1/2 | | 4-6x=52 | | 4(x+5)+11=8x-4(x-5) | | 204+x=33 | | (-1)/(-1) | | (-1x)/(-1) | | -1-9=0 | | x-0.6=4 | | -1x/(-1) | | -1+-9=0 | | y+3.1=17 | | 6x+x=980 | | -1/-1x | | 7-8x=142-43x | | (-2x)-1=1 | | 10.50x+7.35(60)=9.00(x+60) | | -1x/-1 | | 6(x+w)+l=980 | | -12=18-10x | | -2=0.125 | | 5+2(4.5-1)= | | 14=4x-22 | | -5(-4)-29= |

Equations solver categories