Question

Express the following in the form
of a+ib, a, b€R, i=√-1 state the values of a and b if (1+2i)(1+3i)(2+i)rays to-1
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Answer 1

Answer:

a=9 and b=17

Step-by-step explanation:

(1+2i)(1+3i)(2+i)=(9+17i)

so a=9 and b=17