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stels00712
@stels00712
August 2022
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Помогите пожалуйста решить: x^4-5x+7x^2-5x+6=0 4x^4+4x^3-2x^2-x+2=0 2x^3-x^2-7x+6=0 x^4+x^2+x^2+3x-6=0
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гюйс
Verified answer
Х⁴-5х+7х²+5х+6=0
х⁴+7х²+6=0
пусть у=х², тогда
у²+7у+6=0
D=49-24=25=+-5²
у1=( -7-5)/2= - 6
у2=( -7+5)/2= - 1
( -6; -1)
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Answers & Comments
Verified answer
Х⁴-5х+7х²+5х+6=0х⁴+7х²+6=0
пусть у=х², тогда
у²+7у+6=0
D=49-24=25=+-5²
у1=( -7-5)/2= - 6
у2=( -7+5)/2= - 1
( -6; -1)