Question

Решите графически -x^2-6x+5=0

Answer 1

-(x^2-2*3x+3^2-3^2+5)=0
-((x-3)^2-2^2)=0
-(x-3-2)(x-3+2)=0
-(x-5)(x-1)=0
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[ x-5=0 [ x=5
[ x-1=0 [ x=1
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Ответ: х=5;1