7x^2-16x-15=

Simple and best practice solution for 7x^2-16x-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 7x^2-16x-15= equation:


Simplifying
7x2 + -16x + -15 = 0

Reorder the terms:
-15 + -16x + 7x2 = 0

Solving
-15 + -16x + 7x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-5 + -7x)(3 + -1x) = 0

Subproblem 1

Set the factor '(-5 + -7x)' equal to zero and attempt to solve: Simplifying -5 + -7x = 0 Solving -5 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + -7x = 0 + 5 Combine like terms: -5 + 5 = 0 0 + -7x = 0 + 5 -7x = 0 + 5 Combine like terms: 0 + 5 = 5 -7x = 5 Divide each side by '-7'. x = -0.7142857143 Simplifying x = -0.7142857143

Subproblem 2

Set the factor '(3 + -1x)' equal to zero and attempt to solve: Simplifying 3 + -1x = 0 Solving 3 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1x = 0 + -3 -1x = 0 + -3 Combine like terms: 0 + -3 = -3 -1x = -3 Divide each side by '-1'. x = 3 Simplifying x = 3

Solution

x = {-0.7142857143, 3}

See similar equations:

| 4x^2+13x+3= | | 3x+9=8x-31 | | 3s^2+10s+7= | | X^3+6x^2+11x+6= | | 3s^2-s-14= | | 5a^2-9a+4= | | 7=7(11x-4x) | | 85-(4x-6)=x+1 | | 6x^2+13x-5= | | X^4-6x^3+4x^2+6x-5= | | 3x-7(x-1)=-3(2x+3) | | 4x+3y+y= | | 5n^2+n-4= | | 2a^2+11a+9= | | 0.25t^2-4.556t-7.7452=0 | | 7a^2+10a+3= | | 5y^2+12y+7= | | 5x=7-3(x-3) | | -4x+20=36 | | x^2+12x=33 | | 3x-2=6x+4 | | 21x-6=19x | | 4(2+x)=-3(x-5) | | -x+3(x+2)=1 | | a^2+9a+18= | | 5(x+1)-15=0 | | 8-4x=43 | | s^2+9s+20= | | 6x+6=46 | | y^2-2y-15= | | 40-3x=50-8x | | y^2+6y-27= |

Equations solver categories