21a^2+19a+4=0

Simple and best practice solution for 21a^2+19a+4=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 21a^2+19a+4=0 equation:


Simplifying
21a2 + 19a + 4 = 0

Reorder the terms:
4 + 19a + 21a2 = 0

Solving
4 + 19a + 21a2 = 0

Solving for variable 'a'.

Factor a trinomial.
(4 + 7a)(1 + 3a) = 0

Subproblem 1

Set the factor '(4 + 7a)' equal to zero and attempt to solve: Simplifying 4 + 7a = 0 Solving 4 + 7a = 0 Move all terms containing a to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + 7a = 0 + -4 Combine like terms: 4 + -4 = 0 0 + 7a = 0 + -4 7a = 0 + -4 Combine like terms: 0 + -4 = -4 7a = -4 Divide each side by '7'. a = -0.5714285714 Simplifying a = -0.5714285714

Subproblem 2

Set the factor '(1 + 3a)' equal to zero and attempt to solve: Simplifying 1 + 3a = 0 Solving 1 + 3a = 0 Move all terms containing a to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + 3a = 0 + -1 Combine like terms: 1 + -1 = 0 0 + 3a = 0 + -1 3a = 0 + -1 Combine like terms: 0 + -1 = -1 3a = -1 Divide each side by '3'. a = -0.3333333333 Simplifying a = -0.3333333333

Solution

a = {-0.5714285714, -0.3333333333}

See similar equations:

| 1x+1y=32 | | n*4=12+n | | 2x^2-12-3=-13 | | 123+q=145 | | 8(x+3)-5(x+2)=-20 | | 4w^2-12wt+9t^2=0 | | M=2+n | | 15y^6+21y^5-18y^4=0 | | 12x+9=-9y | | 245x^2-63x-389=3 | | 45(x-2)-35x=440 | | 4a+4=20+b | | z^6=2i | | 28+v=86 | | -8-8m-7=-9-7 | | 8-5xy-2xy= | | 10x^2+86x+112=0 | | 311.5=2.5*17+3200c | | 27+j=48 | | 3p^2-31p+56=0 | | 2+3y+x=-14x-40 | | (8x^2y^7)^1/3 | | 4t+3.5=2.25 | | x/5=75 | | 6+9t=7t | | 7x^2-8=10 | | 3(y+1)-20=2(y-5) | | d+21=36 | | 10s+4=-5+9s | | (X-4)(3x+5)= | | Y(C+d)+n(c+d)= | | 4(x-3)=8-2(x+4) |

Equations solver categories