28x^2-35x-42=0

Simple and best practice solution for 28x^2-35x-42=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^2-35x-42=0 equation:


Simplifying
28x2 + -35x + -42 = 0

Reorder the terms:
-42 + -35x + 28x2 = 0

Solving
-42 + -35x + 28x2 = 0

Solving for variable 'x'.

Factor out the Greatest Common Factor (GCF), '7'.
7(-6 + -5x + 4x2) = 0

Factor a trinomial.
7((-3 + -4x)(2 + -1x)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(-3 + -4x)' equal to zero and attempt to solve: Simplifying -3 + -4x = 0 Solving -3 + -4x = 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 + -4x = 0 + 3 Combine like terms: -3 + 3 = 0 0 + -4x = 0 + 3 -4x = 0 + 3 Combine like terms: 0 + 3 = 3 -4x = 3 Divide each side by '-4'. x = -0.75 Simplifying x = -0.75

Subproblem 2

Set the factor '(2 + -1x)' equal to zero and attempt to solve: Simplifying 2 + -1x = 0 Solving 2 + -1x = 0 Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1x = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1x = 0 + -2 -1x = 0 + -2 Combine like terms: 0 + -2 = -2 -1x = -2 Divide each side by '-1'. x = 2 Simplifying x = 2

Solution

x = {-0.75, 2}

See similar equations:

| 5n-7=-25 | | 8/7y-1=47 | | 2x+7+x+3x+1= | | -4+6=6x-2 | | A/32 | | ×/0.36=0.6/0.54 | | 71=7p+8 | | 7x+9+6x=126 | | 2x-72=243 | | 4-2(3x+4)=14 | | 4x-(6x-5)=-1 | | 8b+5=22 | | h+5=6 | | 11x+7xy+2y+14z=15 | | 6X+7X=13 | | -28=-4(8+a) | | 4(2n-4)=7(n+3) | | r-/11/3=-7 | | (-4b)4= | | 16x^2+40x=-11 | | 3(t-2)+5t=4(2t+4)-9 | | 16x^2+40x+11=0 | | (-4b)b= | | -4x+4(7x+20)=-16 | | 452=6+50d | | X+46=73 | | 5=5/8(4)-3 | | 4-(2y+5)= | | .75x-.25(10-x)=.89(10) | | 4x+4(-6x-4)=16 | | 0.3x-0.3y-0.4z=0.5 | | .75x+.25(10-x)=.89(10) |

Equations solver categories