21x^2+7=-52x

Simple and best practice solution for 21x^2+7=-52x 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 21x^2+7=-52x equation:


Simplifying
21x2 + 7 = -52x

Reorder the terms:
7 + 21x2 = -52x

Solving
7 + 21x2 = -52x

Solving for variable 'x'.

Reorder the terms:
7 + 52x + 21x2 = -52x + 52x

Combine like terms: -52x + 52x = 0
7 + 52x + 21x2 = 0

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

Subproblem 1

Set the factor '(7 + 3x)' equal to zero and attempt to solve: Simplifying 7 + 3x = 0 Solving 7 + 3x = 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 + 3x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 3x = 0 + -7 3x = 0 + -7 Combine like terms: 0 + -7 = -7 3x = -7 Divide each side by '3'. x = -2.333333333 Simplifying x = -2.333333333

Subproblem 2

Set the factor '(1 + 7x)' equal to zero and attempt to solve: Simplifying 1 + 7x = 0 Solving 1 + 7x = 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 + 7x = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 7x = 0 + -1 7x = 0 + -1 Combine like terms: 0 + -1 = -1 7x = -1 Divide each side by '7'. x = -0.1428571429 Simplifying x = -0.1428571429

Solution

x = {-2.333333333, -0.1428571429}

See similar equations:

| 2.50+1.25x=22.00 | | (x-2)(1-3x)=0 | | 4x-26=5(-x) | | x+40+2x-20+2x+20=180 | | 3x=y^2+4y+16 | | 4x+7=-3x-28 | | x^3-100x=100 | | 4(3x-4)=12x-9 | | 4x=16y+8 | | 3(4x+3)=5(2x+1) | | 3X+2=m(x+4) | | t=6000*.12*180 | | -7-7x=(4x+9)(x-1) | | 2x+x+2x+15=180 | | 2a+3a-24=4a | | 6(u-4)-8=-7(-3u+5)-3u | | e^(x/2) | | -ab+ac=0 | | -ab-c=0 | | 33=-5-5y | | -ab+c=0 | | t^2-t-0.5=0 | | 105=15m | | 33=3s | | y=1/(16z) | | k/15=13/15 | | 0-y=4x | | 4z=68 | | y=1/16z | | 4(x+1)-20=28 | | 2x+12y=78 | | 6+2y+y=0 |

Equations solver categories