Tf -2 = -3 + 4i, then is it true th...
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Tf -2 = -3 + 4i, then is it true that z = + (1 + 2i)?

JEE/Engineering Exams
Maths
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( begin{aligned} z^{2} &=-3+4 i &=-3+2 cdot j cdot 2 &=1-4+2 cdot 2 cdot 2 cdot 2 cdot 1^{2}+2 cdot 1 cdot 2 &=(1)^{2}+(2 i)^{2} &=(1+2 i)^{2} Delta-z &=pm(1+2 i) text { statement in True } end{aligned} )
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