(a+b)(a-2b)=-9

Simple and best practice solution for (a+b)(a-2b)=-9 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 (a+b)(a-2b)=-9 equation:


Simplifying
(a + b)(a + -2b) = -9

Multiply (a + b) * (a + -2b)
(a(a + -2b) + b(a + -2b)) = -9
((a * a + -2b * a) + b(a + -2b)) = -9

Reorder the terms:
((-2ab + a2) + b(a + -2b)) = -9
((-2ab + a2) + b(a + -2b)) = -9
(-2ab + a2 + (a * b + -2b * b)) = -9
(-2ab + a2 + (ab + -2b2)) = -9

Reorder the terms:
(-2ab + ab + a2 + -2b2) = -9

Combine like terms: -2ab + ab = -1ab
(-1ab + a2 + -2b2) = -9

Solving
-1ab + a2 + -2b2 = -9

Solving for variable 'a'.

Reorder the terms:
9 + -1ab + a2 + -2b2 = -9 + 9

Combine like terms: -9 + 9 = 0
9 + -1ab + a2 + -2b2 = 0

The solution to this equation could not be determined.

See similar equations:

| -3t=3r-54 | | -y/7=-3.3 | | -5+4k=k+7 | | 1/4(k-30)=15 | | 20-2(3x-1)=x-6 | | 0.0567/27 | | 17(14-7p)-2=-2 | | b-2+2b=16 | | 3(x-6)+6=5x-9 | | solvetr=c-cxt | | (k-4)/3=8 | | 1.105/13 | | 1.105/12 | | 4(t-4)+4t=8t+12-8 | | 0.882/6 | | -612=-17d | | -(6y+1)-(-5y-7)=6 | | 3x+15/3=x+4 | | -2=2.5x+b | | c+758=96 | | 0.528/12 | | 0.50x+0.40(20)=0.25(64) | | -164=2x-3(4x+18) | | 7-4x+5y=0 | | 3x^2-2x-44=0 | | -26+8r=7(r+8) | | 1.9=4.9-0.6x | | 125m+100m+33775=35875-150m | | -11+2x=10-9x | | 27-11=4(x-8) | | 6x+3x-7=11 | | 20x+3+5x+4=-18 |

Equations solver categories