28x^2-15x-25=0

Simple and best practice solution for 28x^2-15x-25=0 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 28x^2-15x-25=0 equation: 


Simplifying
28x2 + -15x + -25 = 0

Reorder the terms:
-25 + -15x + 28x2 = 0

Solving
-25 + -15x + 28x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-5 + -7x)(5 + -4x) = 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 '(5 + -4x)' equal to zero and attempt to solve:

Simplifying
5 + -4x = 0

Solving
5 + -4x = 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 + -4x = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -4x = 0 + -5
-4x = 0 + -5

Combine like terms: 0 + -5 = -5
-4x = -5

Divide each side by '-4'.
x = 1.25

Simplifying
x = 1.25
Solution
x = {-0.7142857143, 1.25}

See similar equations:

| s-17=(s-5) | | (3x+7)-(4+2x)=9 | | x^2+14x=-1 | | 85=5(5-2x) | | 9(x+4)=9(x-2) | | 10a+7a+4= | | 9+-1= | | 2(3-4x)=30 | | -x-3=2 | | 13=5x+3 | | -4-3n+m^2= | | -3x-4x=11-10x | | -5x+14x-x= | | X^2-33x-280=0 | | -7(2x+3)=-34-8x+7x | | 2(1-2x)=14 | | -1+-3= | | 1x+6=7 | | 5a+7=17 | | -2+-1= | | 3n-7=5n+9 | | 4(6x+2)-5(x-2)=6x-54+x | | -1/2+(-1/3)= | | 155+90= | | 1*2= | | 3a^2+30a+63= | | 1.2*-5= | | X-1=1+x | | 5x-8=3x+5 | | 13=29-8x | | 9/20+1/5= | | 3z=-5.85 |

Equations solver categories