Solve the following equation
\[(z-1)(z+2)= (z+4)(z-2)\]
Algebric Problem
Last edited by Phlembac Adib Hasan on Sat Sep 24, 2016 10:31 am, edited 1 time in total.
Reason: For clarification
Reason: For clarification
Re: Algebric Problem
$(z-1)(z+2)= (z+4)(z-2)$
$\Rightarrow$ $z^{2}+2z-z-2=z^{2}-2z+4z-8$
$\Rightarrow$ $z-2=2z-8$
$\Rightarrow$ $z=6$
$\Rightarrow$ $z^{2}+2z-z-2=z^{2}-2z+4z-8$
$\Rightarrow$ $z-2=2z-8$
$\Rightarrow$ $z=6$
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