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To multiply complex numbers you can use the same FOIL rule that you use for multiplying binomials (First, Inside, Outside, Last).
(4 - 3i)(5 + 2i) = (4)(5) +(4)(2i) - (3i)(5) - (3i)(2i) = 20 + 8i-15i - 6(i)^2
= 20 -7i - 6(-1) = 20 + 6 -7i = 26 -7i.
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Product in a math problem?
The product in a math is the answer to a multiplication problem.
What is 2i squared?
This is calculated as follows: (2i)2 = 2i x 2i = 4i2 = 4(-1) = -4.
What is the conjagate of 6-2i?
It is 6+2i. But -6-2i will also serve.
What is the reciprocal of 2i?
1/2i
What is 2-4i over 4 plus 2i put in the form of a plus bi?
To solve this type of problem, multiply both the numerator and denominator by the conjugate of the denominator. (2 - 4i) / (4 + 2i) = (2 - 4i)(4 - 2i) / (4 + 2i)(4 - 2i) then expand all the terms, and simplify. = (8 - 20i + 8i2) / (16 - 4i2) = (8 - 20i - 8) / (16 + 4) = -20i / 20 = -i Which in the required answer format becomes, 0 + i.
What does at least mean in a math problem?
In a math problem, least means smallest.
What is a sum in a multiplication math problem?
The product is the "sum" of a multiplication math problem.
What is 19.86 - 4.94 Math problem?
19.86 - 4.94 math problem = 14.919999999999998
What is the conjugate of 7 - 2i?
7 + 2i
Can you find a math problem that summarizes?
What do you want said math problem to summarize? Try that.
Do You add after doing parentheses when simplifying a math problem?
removing the parentheses in a math problem
How do you compare a math problem?
.. with another math problem.... See if the question is the same or different.
