can anyone show me how to do these algebra 2 problems?

Lesson:Perform operations with complex numbers

Multiplying and dividing :write the expression as a complex numbering standard form.

1.(-1-5i)(-1+5i)

2.(5-7i)(-4-3i)

3.6i(3+2i)

 

in Algebra 2 Answers by Level 1 User (160 points)

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1 Answer

(-1 - 5i)(-1 + 5i)

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

(-1)^2 - (5i)^2

1 - (-25)

26.

(5-7i)(-4-3i)

FOIL

5(-4) + 5(-3i) + (-7i)(-4) + (-7i)(-3i)

-20 - 15i + 28i - 21

-41 + 13i

.

6i(3+2i)

18i + 12i^2

18i - 12

-12 + 18i
by Level 13 User (103k points)

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