Question

10. If z=5+(3-12)i, then zz is equal to
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Answer 1

Answer:

z=5+(3-12)i

therefore z*z= (5+(3-12i)) * (5+(3-12i))

                    = 25 +5(3-12i) + 5(3-12i) + (3-12i)^2

                    = 25 + (15-60i) + (15-60i) +9 - 72i + 144

                    = 25 + 30 + 9 + 144 - 120i- 72i

                    = 208 - 192i

Hence , answer is 208 - 192i or 208 - 192$\sqrt{-1}$

PLEASE ADD AS BRAINLIEST IF IT IS CORRECT AND SORRY IF IT IS NOT CORRECT.