(2+j)*(-5-j)=-9-7j

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Solution for (2+j)*(-5-j)=-9-7j equation:


Simplifying
(2 + j)(-5 + -1j) = -9 + -7j

Multiply (2 + j) * (-5 + -1j)
(2(-5 + -1j) + j(-5 + -1j)) = -9 + -7j
((-5 * 2 + -1j * 2) + j(-5 + -1j)) = -9 + -7j
((-10 + -2j) + j(-5 + -1j)) = -9 + -7j
(-10 + -2j + (-5 * j + -1j * j)) = -9 + -7j
(-10 + -2j + (-5j + -1j2)) = -9 + -7j

Combine like terms: -2j + -5j = -7j
(-10 + -7j + -1j2) = -9 + -7j

Add '7j' to each side of the equation.
-10 + -7j + 7j + -1j2 = -9 + -7j + 7j

Combine like terms: -7j + 7j = 0
-10 + 0 + -1j2 = -9 + -7j + 7j
-10 + -1j2 = -9 + -7j + 7j

Combine like terms: -7j + 7j = 0
-10 + -1j2 = -9 + 0
-10 + -1j2 = -9

Solving
-10 + -1j2 = -9

Solving for variable 'j'.

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

Add '10' to each side of the equation.
-10 + 10 + -1j2 = -9 + 10

Combine like terms: -10 + 10 = 0
0 + -1j2 = -9 + 10
-1j2 = -9 + 10

Combine like terms: -9 + 10 = 1
-1j2 = 1

Divide each side by '-1'.
j2 = -1

Simplifying
j2 = -1

Reorder the terms:
1 + j2 = -1 + 1

Combine like terms: -1 + 1 = 0
1 + j2 = 0

The solution to this equation could not be determined.

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