0=21x^2-16x-16

Simple and best practice solution for 0=21x^2-16x-16 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 0=21x^2-16x-16 equation: 


Simplifying
0 = 21x2 + -16x + -16

Reorder the terms:
0 = -16 + -16x + 21x2

Solving
0 = -16 + -16x + 21x2

Solving for variable 'x'.

Combine like terms: 0 + 16 = 16
16 + 16x + -21x2 = -16 + -16x + 21x2 + 16 + 16x + -21x2

Reorder the terms:
16 + 16x + -21x2 = -16 + 16 + -16x + 16x + 21x2 + -21x2

Combine like terms: -16 + 16 = 0
16 + 16x + -21x2 = 0 + -16x + 16x + 21x2 + -21x2
16 + 16x + -21x2 = -16x + 16x + 21x2 + -21x2

Combine like terms: -16x + 16x = 0
16 + 16x + -21x2 = 0 + 21x2 + -21x2
16 + 16x + -21x2 = 21x2 + -21x2

Combine like terms: 21x2 + -21x2 = 0
16 + 16x + -21x2 = 0

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


Subproblem 1
Set the factor '(4 + -3x)' equal to zero and attempt to solve:

Simplifying
4 + -3x = 0

Solving
4 + -3x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + -4 + -3x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -3x = 0 + -4
-3x = 0 + -4

Combine like terms: 0 + -4 = -4
-3x = -4

Divide each side by '-3'.
x = 1.333333333

Simplifying
x = 1.333333333

Subproblem 2
Set the factor '(4 + 7x)' equal to zero and attempt to solve:

Simplifying
4 + 7x = 0

Solving
4 + 7x = 0

Move all terms containing x to the left, all other terms to the right.

Add '-4' to each side of the equation.
4 + -4 + 7x = 0 + -4

Combine like terms: 4 + -4 = 0
0 + 7x = 0 + -4
7x = 0 + -4

Combine like terms: 0 + -4 = -4
7x = -4

Divide each side by '7'.
x = -0.5714285714

Simplifying
x = -0.5714285714
Solution
x = {1.333333333, -0.5714285714}

See similar equations:

| 44=20a | | y=21x^2-16x-16 | | -2a+24+9a=3a-8a | | 7y-6y+6=20 | | 3(X+3)=-9 | | P=R-Csolver | | 11-44=3(x-3)-6 | | 33-7x-15=y | | -5X+4X+3=-6 | | 1+5m=1+m-4+5m | | 7(3y-1)=14y | | 4(4x+1)+3(x+3)+2=110 | | 9-4x-7x+3= | | -3.1=5.7z-4.7z+8.1 | | 2n+4=10n+2 | | 3x+5(x-4)=15 | | -4(2z+3)=33+7z+15 | | 5x-10+7x+46=180 | | -p+6(2p-1)+4= | | (-5m^9)(6m^7)(-3m^8)= | | 3(x+5)*3x=21 | | 2a+3=9+6a | | p+1.6(0.4)=-1.2 | | -.5x^2+40x+300=300 | | 13=b-8 | | 2(v-5)-6v=14 | | 20+3x=10+5x | | x+6whenx=3 | | 2a-8=4(3a+1)5 | | 6x(x-3)=17x^2-19x | | 12(x+2)+10=4(x+5)+12 | | 3a=4b+9 |

Equations solver categories