3m^2+8m+15=

Simple and best practice solution for 3m^2+8m+15= 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 3m^2+8m+15= equation:


Simplifying
3m2 + 8m + 15 = 0

Reorder the terms:
15 + 8m + 3m2 = 0

Solving
15 + 8m + 3m2 = 0

Solving for variable 'm'.

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
5 + 2.666666667m + m2 = 0

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + 2.666666667m + -5 + m2 = 0 + -5

Reorder the terms:
5 + -5 + 2.666666667m + m2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + 2.666666667m + m2 = 0 + -5
2.666666667m + m2 = 0 + -5

Combine like terms: 0 + -5 = -5
2.666666667m + m2 = -5

The m term is 2.666666667m.  Take half its coefficient (1.333333334).
Square it (1.777777780) and add it to both sides.

Add '1.777777780' to each side of the equation.
2.666666667m + 1.777777780 + m2 = -5 + 1.777777780

Reorder the terms:
1.777777780 + 2.666666667m + m2 = -5 + 1.777777780

Combine like terms: -5 + 1.777777780 = -3.22222222
1.777777780 + 2.666666667m + m2 = -3.22222222

Factor a perfect square on the left side:
(m + 1.333333334)(m + 1.333333334) = -3.22222222

Can't calculate square root of the right side.

The solution to this equation could not be determined.

See similar equations:

| 2b-10+17+5b=7-10-5b+2b | | 10-4(4)=-x | | 16f-7f-2f= | | 2=2k+3k^2 | | -8x-14=3x-7(x-2) | | 19g-18g=7 | | 4(-10+4y)-4y=8 | | 6y+15-8y=1 | | 2a=5+1 | | 10+9=n+17 | | 5(3x-2)=12 | | 245-310t=2105 | | 14c-12c=16 | | k-30=-13 | | 3b-5+8+6b=4-10-4b+2b | | 4-5z+8z+8+7z=132 | | 3v-3(v+12)=6(3+3v) | | -1-2p+5=4p+6 | | 2x-5+3=-18 | | 2(x+3)+8=-18 | | 25x+9.95=259.95 | | (x-20)=(4x+15) | | 29.75+0.15=19.95+0.29 | | 6(8-x)=(4+7) | | ln*(x-4)+ln*(4*x+1)=10 | | (12z-15)(12z-21)=0 | | 10y+18+3y=5 | | 5c+4c=13 | | 5.1a+12=73.2 | | -8=6x-1-6x | | 6(c+4)=c-18 | | (x-7)+4yi=9+(y-21)i |

Equations solver categories