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X^2-(2+i)X-(1-7i)=0 |
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Answer» x^2-(2+i)x-=1-7i)=0; x^2-2x-ix =1+7i=0; x(x-2)-ix=1+7i; x( x-2)=1; x+2=1; x=7; x^2-2x-1; a=1; b=2; c=-1; -b+-Vb^2-4ac/2a; -2+-V(2)^2-4(1)(-1)/2(1) -2+-V4+4/2; -2+-2V2/2=1-+V2; (1+V2, 7)(1-V2,7) |
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