28a^2-84a+63=0

Simple and best practice solution for 28a^2-84a+63=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 28a^2-84a+63=0 equation:


Simplifying
28a2 + -84a + 63 = 0

Reorder the terms:
63 + -84a + 28a2 = 0

Solving
63 + -84a + 28a2 = 0

Solving for variable 'a'.

Factor out the Greatest Common Factor (GCF), '7'.
7(9 + -12a + 4a2) = 0

Factor a trinomial.
7((3 + -2a)(3 + -2a)) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(3 + -2a)' equal to zero and attempt to solve: Simplifying 3 + -2a = 0 Solving 3 + -2a = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -2a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2a = 0 + -3 -2a = 0 + -3 Combine like terms: 0 + -3 = -3 -2a = -3 Divide each side by '-2'. a = 1.5 Simplifying a = 1.5

Subproblem 2

Set the factor '(3 + -2a)' equal to zero and attempt to solve: Simplifying 3 + -2a = 0 Solving 3 + -2a = 0 Move all terms containing a to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -2a = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -2a = 0 + -3 -2a = 0 + -3 Combine like terms: 0 + -3 = -3 -2a = -3 Divide each side by '-2'. a = 1.5 Simplifying a = 1.5

Solution

a = {1.5, 1.5}

See similar equations:

| Y^3-8y^2+16y=0 | | 25a^2+60ab+36b^2=0 | | 7x+6x-1=7/6 | | x=4x+20 | | c^2+8c+48=0 | | y=2+-6x | | 11(t-3)+7t=6(3t+5)-8 | | 1(t-3)+7t=6(3t+5)-8 | | (3x-20)+x=120 | | (2x-3)/4-(4-x)/2=(x+1)/3 | | 4-6(6y-2)=2y+4-8(1-5y) | | x/6+1=x/2+2 | | z^2+8z+16=0 | | 198.24=2.64x+15.55 | | 5x-1=2+11 | | c=2.64(19)+15.55 | | .25(x+9)=12 | | -(8y+2)-(-7y-5)=-4 | | c=2.64(10)+15.55 | | -(8y+2)-(7y-5)=-4 | | 2(3-4b)-5(2b+3)=2b-17 | | 6x+5x=20 | | 5x-8y=13 | | -66=6-9x | | 3x-4=-62 | | c=2.64(6)+15.55 | | 24a^2+a+12-18a^4-3a^3=0 | | 2(5x+7)=124 | | x+(x+40)=90 | | 2p=14 | | -18a^4+3a^3-28a^2-9a-8=0 | | 4(-3z+3)=-10(z-6)-14z |

Equations solver categories