(1) Answers

sqrt(-25)+2*sqrt(-9)= 5sqrt(-1)+2*3*sqrt(-1)= 5i+6i=11i recall that i*i = -1 :)

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(1) Answers

sqrt(-25)+2*sqrt(-9)= 5sqrt(-1)+2*3*sqrt(-1)= 5i+6i=11i recall that i*i = -1 :)

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