(8-7i)(9+i)=79-55i

Simple and best practice solution for (8-7i)(9+i)=79-55i 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 (8-7i)(9+i)=79-55i equation:


Simplifying
(8 + -7i)(9 + i) = 79 + -55i

Multiply (8 + -7i) * (9 + i)
(8(9 + i) + -7i * (9 + i)) = 79 + -55i
((9 * 8 + i * 8) + -7i * (9 + i)) = 79 + -55i
((72 + 8i) + -7i * (9 + i)) = 79 + -55i
(72 + 8i + (9 * -7i + i * -7i)) = 79 + -55i
(72 + 8i + (-63i + -7i2)) = 79 + -55i

Combine like terms: 8i + -63i = -55i
(72 + -55i + -7i2) = 79 + -55i

Add '55i' to each side of the equation.
72 + -55i + 55i + -7i2 = 79 + -55i + 55i

Combine like terms: -55i + 55i = 0
72 + 0 + -7i2 = 79 + -55i + 55i
72 + -7i2 = 79 + -55i + 55i

Combine like terms: -55i + 55i = 0
72 + -7i2 = 79 + 0
72 + -7i2 = 79

Solving
72 + -7i2 = 79

Solving for variable 'i'.

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

Add '-72' to each side of the equation.
72 + -72 + -7i2 = 79 + -72

Combine like terms: 72 + -72 = 0
0 + -7i2 = 79 + -72
-7i2 = 79 + -72

Combine like terms: 79 + -72 = 7
-7i2 = 7

Divide each side by '-7'.
i2 = -1

Simplifying
i2 = -1

Reorder the terms:
1 + i2 = -1 + 1

Combine like terms: -1 + 1 = 0
1 + i2 = 0

The solution to this equation could not be determined.

See similar equations:

| 7(x-8)=7x-56 | | 17-7n=-53 | | -3(-4v+8)=12v-17 | | 7(x-8)=7x+56 | | x^2-4x-4-9y^2=0 | | 4(x+11)=4x+44 | | 6(x+7)=6(x+9) | | 25=2x-7+4x | | 3y^2=-20y+32 | | -x(x-3)+(x+1)= | | Z-0.2z+4.8=1.6(z-0.5) | | 34-2x=126 | | 7(x-7)=7x+49 | | =-1.000+5.5P | | (x+3)x=54 | | 2x+15=2x-20 | | 7x+10=-7x-18 | | 7x+10=7x-18 | | 7(x+10)=7x+70 | | 12x+3=-2x+7 | | 10x^2+61x+72=0 | | 3x+14=3x-20 | | 2x+25+3x-10=180 | | k+4=-16 | | 3x+14=-6x-20 | | 2x+13=-2x-18 | | 15y^2+45y-12=0 | | 3x(x+2)-(5x-3)= | | y+8=-3(x-6) | | 2.7(z-1)=0.5(z-12) | | 2x^2-4x-41=0 | | 5(6x+2)+26+7x=6x-2(12+9X) |

Equations solver categories