Question

Multiply and simplify.

(3 + i)(4 + 2i)


Use the imaginary number i to rewrite the expression:


(Minus B)

Answer 1

Multiply and simplify (3 + i)(4 + 2i)

(3 + i)(4 + 2i) = (3*4) + (3*2i) + (4*i) + (2i*i) = 12 + 6i + 4i + 2i^2

i^2 = -1

12 + 6i + 4i + 2i^2 = 12 + 6i + 4i -2 = 10 + 10i

Use the imaginary number i to rewrite the expression:

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`-√(-16) \\(-1)√((-1)16)\\(-1)√(16)i\\(-1)4i\\-4i`