7x^2-6x-40=0

Simple and best practice solution for 7x^2-6x-40=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 7x^2-6x-40=0 equation:


Simplifying
7x2 + -6x + -40 = 0

Reorder the terms:
-40 + -6x + 7x2 = 0

Solving
-40 + -6x + 7x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(-2 + -1x)(20 + -7x) = 0

Subproblem 1

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

Subproblem 2

Set the factor '(20 + -7x)' equal to zero and attempt to solve: Simplifying 20 + -7x = 0 Solving 20 + -7x = 0 Move all terms containing x to the left, all other terms to the right. Add '-20' to each side of the equation. 20 + -20 + -7x = 0 + -20 Combine like terms: 20 + -20 = 0 0 + -7x = 0 + -20 -7x = 0 + -20 Combine like terms: 0 + -20 = -20 -7x = -20 Divide each side by '-7'. x = 2.857142857 Simplifying x = 2.857142857

Solution

x = {-2, 2.857142857}

See similar equations:

| 2log(x+1)=log(3) | | x+7(x-3)=2x | | 8x+1=-1x-8 | | log^2(5x-4)=4 | | (2x^2+19x+45)/(x+6) | | c=yt+y | | f(x)=15-2x | | 3x-6-5=2+5+5x | | (7x-15)=(2x+25) | | m/-2=35 | | 2X+(0.9/(1+0.9X)) | | 2(2w+2)+4w=3(2w-2) | | 6/13=p/19 | | 3x-45=5+x | | 2/3x-6=-9 | | F(x)=2*3a^2-3*3a+4 | | z=9x+20y | | (8x+7)4x=15 | | x*5+12=8*x | | -8y-1=8+4y | | -2.4=2.4k+3.6k | | f(x)=(x-4)(x-4)+5 | | 3.4=-13.6+(-3.4c)1.7 | | 10/16=q/11 | | log(x+1)-log(3)=-log(x+1) | | m-4/5 | | 5y^2-2=9y | | 15-12n=n+12 | | log^3(12x+3)=5 | | 9=-9+17 | | 159=14x+19 | | f(x)=2x^5-14x^3-10x^2-4250find(5) |

Equations solver categories