40x^2-51x-7=0

Simple and best practice solution for 40x^2-51x-7=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 40x^2-51x-7=0 equation:


Simplifying
40x2 + -51x + -7 = 0

Reorder the terms:
-7 + -51x + 40x2 = 0

Solving
-7 + -51x + 40x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-1 + -8x)(7 + -5x) = 0

Subproblem 1

Set the factor '(-1 + -8x)' equal to zero and attempt to solve: Simplifying -1 + -8x = 0 Solving -1 + -8x = 0 Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + -8x = 0 + 1 Combine like terms: -1 + 1 = 0 0 + -8x = 0 + 1 -8x = 0 + 1 Combine like terms: 0 + 1 = 1 -8x = 1 Divide each side by '-8'. x = -0.125 Simplifying x = -0.125

Subproblem 2

Set the factor '(7 + -5x)' equal to zero and attempt to solve: Simplifying 7 + -5x = 0 Solving 7 + -5x = 0 Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + -5x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -5x = 0 + -7 -5x = 0 + -7 Combine like terms: 0 + -7 = -7 -5x = -7 Divide each side by '-5'. x = 1.4 Simplifying x = 1.4

Solution

x = {-0.125, 1.4}

See similar equations:

| 12-3(-2x+4)= | | 8.75-250= | | 6(1+8k)+2k=(1+k) | | 2x+9=61-8x | | 2x+37=9x-27 | | 3x+5=3x+2 | | 2x+37=7x-5 | | 6x^2+37x+22=0 | | 3x+2(10-x)=23 | | 2x+37=7x+5 | | 10*-1.1+8= | | 28x^2+23x-15=0 | | 5x^2=78 | | 5m-2m= | | 0=7x^2+8x+1 | | 21x-5=4+18x | | -18+3n=3n^2 | | 2x-14+5x=-2x+4 | | 4x+16=5x+12 | | -2*-3.5+2= | | (x+8)(x+8)-225=0 | | 4x+2y-2x+y+3x= | | -7*-0.57+2= | | 4x=-19+3 | | (x+8)2-225=0 | | 0=3x^2+4x+1 | | 5x=20x+6 | | 4(2x-3)+7=8x+5 | | 10x+8=-3 | | 6x+5=-7+3x+24 | | -4(a-5)=2(3a+5) | | 3x-9=3-x |

Equations solver categories