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zorya1404
@zorya1404
July 2022
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Помогите пожалуйста, очень надо!!!
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YuraaUdakov
Это к первому примеру,сейчас решу для второго
0 votes
Thanks 0
koldunshura
первый правильный
hlopushinairina
3)(x²-1)(x²+3)=(x²+1)²+x;⇒
x⁴-x²+3x²-3=x⁴+2x²+1+x;⇒x⁴+2x²-3-x⁴-2x²-x-1=0⇒
-x=4;⇒x=-4;
4a. x³-xy²+3y²-3x²=x²(x-3)-y²(x-3)=(x-3)(x²-y²)=(x-3)(x+y)(x-y);
4б.8m⁴-m⁷=m⁴(8-m³)=m(2-m)(4+2m+m²);
1 votes
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Answers & Comments
x⁴-x²+3x²-3=x⁴+2x²+1+x;⇒x⁴+2x²-3-x⁴-2x²-x-1=0⇒
-x=4;⇒x=-4;
4a. x³-xy²+3y²-3x²=x²(x-3)-y²(x-3)=(x-3)(x²-y²)=(x-3)(x+y)(x-y);
4б.8m⁴-m⁷=m⁴(8-m³)=m(2-m)(4+2m+m²);