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dashka10643
@dashka10643
July 2022
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х2+9х+8/3х2+8х+5
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dasdasfa
Разложим квадратные трехчлены на множители:
x^2+9x+8=0; D=81-32=49=7^2; x1=(-9-7)/2=-8; x2=(-9+7)/2=-1
x^2+9x+8=(x+8)(x+1)
3x^2+8x+5=0; D1=16-15=1; x1=(-4-1)/3=-5/3; x2=(-4+1)/3=-1
3x^2+8x+5=3(x+5/3)(x+1)=(3x+5)(x+1)
х2+9х+8/3х2+8х+5=((x+8)(x+1))/((3x+5)(x+1))=(x+8)/(3x+5)
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Answers & Comments
x^2+9x+8=0; D=81-32=49=7^2; x1=(-9-7)/2=-8; x2=(-9+7)/2=-1
x^2+9x+8=(x+8)(x+1)
3x^2+8x+5=0; D1=16-15=1; x1=(-4-1)/3=-5/3; x2=(-4+1)/3=-1
3x^2+8x+5=3(x+5/3)(x+1)=(3x+5)(x+1)
х2+9х+8/3х2+8х+5=((x+8)(x+1))/((3x+5)(x+1))=(x+8)/(3x+5)