28x^2+61x+21=0

Simple and best practice solution for 28x^2+61x+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 28x^2+61x+21=0 equation:


Simplifying
28x2 + 61x + 21 = 0

Reorder the terms:
21 + 61x + 28x2 = 0

Solving
21 + 61x + 28x2 = 0

Solving for variable 'x'.

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

Subproblem 1

Set the factor '(7 + 4x)' equal to zero and attempt to solve: Simplifying 7 + 4x = 0 Solving 7 + 4x = 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 + 4x = 0 + -7 Combine like terms: 7 + -7 = 0 0 + 4x = 0 + -7 4x = 0 + -7 Combine like terms: 0 + -7 = -7 4x = -7 Divide each side by '4'. x = -1.75 Simplifying x = -1.75

Subproblem 2

Set the factor '(3 + 7x)' equal to zero and attempt to solve: Simplifying 3 + 7x = 0 Solving 3 + 7x = 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 + 7x = 0 + -3 Combine like terms: 3 + -3 = 0 0 + 7x = 0 + -3 7x = 0 + -3 Combine like terms: 0 + -3 = -3 7x = -3 Divide each side by '7'. x = -0.4285714286 Simplifying x = -0.4285714286

Solution

x = {-1.75, -0.4285714286}

See similar equations:

| 5+2(2x-10)=-10-11 | | 2n+6= | | 6.3=-0.6 | | 8-2(4-5)=-5-10 | | -16x-60+12x^2= | | (x+7)(x-3)=0 | | 8-2(4-3x)=4x-10 | | 21t-28+8=-6 | | 10k+5-7=28 | | -120x^2-25x^3+5x^4= | | 2x^2+3x-3=0 | | x^2+13x+4=0 | | 4(3x+1)-5x=25 | | 2x^3-7x^2-15x= | | 5+2(2x-7)=6x+11 | | (5-v)(3v+8)=0 | | 3x^2-12x+6=0 | | 8x^2-24xy-32y^2=0 | | X^2-13x= | | 15m^3+145m^2-420m= | | x-13x^2+36=0 | | 4(4X-5)=24-2(Y-1) | | 23=10x-x^2 | | 36x-45x^4+21x^3=0 | | 9x^7+6x^6= | | 2x+3x+45=4x+7x+15 | | 4K^4+10K^3-6K^3= | | 2(2m-5)=m+11 | | x-4=x^2-8x-16 | | 3x-7=-11 | | 4x^2-15x+23=5x+2 | | 8d^2+10d-3= |

Equations solver categories