5x^2+22x+21=0

Simple and best practice solution for 5x^2+22x+21=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 5x^2+22x+21=0 equation:


Simplifying
5x2 + 22x + 21 = 0

Reorder the terms:
21 + 22x + 5x2 = 0

Solving
21 + 22x + 5x2 = 0

Solving for variable 'x'.

Factor a trinomial.
(3 + x)(7 + 5x) = 0

Subproblem 1

Set the factor '(3 + x)' equal to zero and attempt to solve: Simplifying 3 + x = 0 Solving 3 + x = 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 + x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + x = 0 + -3 x = 0 + -3 Combine like terms: 0 + -3 = -3 x = -3 Simplifying x = -3

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 = {-3, -1.4}

See similar equations:

| x=14x(-1+15+8) | | 12x+13=11x-1+24 | | 3x^2+25x+32=0 | | 12(2x-6)=3(8x+1) | | 8+11n-7=9n+21-2n | | x*x+2x=115 | | 6.1k-2.2k=2.73 | | -5(5-4p)=-37+8p | | -7x+6x=7 | | 14-1/5(j-10)=2/5(25+j) | | 6(x+1)=2x-10 | | -12/30(-42/72)= | | 24y+74=23y+92 | | g(p+4)=2x^2+4x+12 | | -7(1+7a)=189 | | 9x-5=8x+1 | | 108=j-24 | | 9k^2+121=0 | | 15x-9x+1=6 | | 9.2+9.2=x | | 12m=15m-7.5 | | 6(7-x)+3=9x | | -3x+5(2x-1)=2.5(x+2) | | -3n-7=-n+17 | | -v-2-2v=-12+7v | | -x^2=16 | | 8+2z-6=8z+8-3z | | 34.4=4.3n | | 3.333k+0.5=0.25k | | 7x-5=5+5x | | 3*(4x-6)=2x-(5x-12) | | t(0)=4.3(0) |

Equations solver categories