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Shtirlitz [24]
3 years ago
11

Simplify the given expression below: (7-3i)•(2-i)

Mathematics
1 answer:
Dimas [21]3 years ago
5 0

when multiplying two binomials together we use the F.O.I.L. method:

First

Outer

Inner

Last

(7-3i)(2-i)

First: 7 * 2 ..... Outter: 7 * -i .... Inner: -3i * 2 ...... Last: -3i * -i

First: 14 ...... Outter= -7i ..... Inner: -6i .... Last: 3i^2

putting this together we get 14-7i-6i+2i^2

We combine like terms and end up with 2i^2-13i+14

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What's the answer please
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12^2 - 11^2
= 144 - 121 
= 23

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answer
C. 4.8
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Step-by-step explanation:

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3 years ago
Consider the roots of a cubic equation with integral coefficients: −1, −4, and 3. Which choice is a factor of the cubic equation
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D

Step-by-step explanation:

Lets go case by case.

Given the roots, a factor will be part of the equation if for some of the roots the factor becomes null, i.e., equal to 0.

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