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oksan4ik4
@oksan4ik4
April 2023
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Найдите значение выражения х₁(4x₂+3) + x₂(4x₁+3), если х₁ и х₂ - корни уравнения [tex]x^{2}+5x-1=0[/tex]
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fenix6810
4x1*x2+3x1+4x1x2+3x2=8x1x2+3(x1+x2)=8*(-1)+3*(-5)=-8-15=-23
x1+x2=-5
x1x2=-1
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4x1*x2+3x1+4x1x2+3x2=8x1x2+3(x1+x2)=8*(-1)+3*(-5)=-8-15=-23
x1+x2=-5
x1x2=-1