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173201
@173201
October 2021
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ПОЖАЛУЙСТА ПОМОГИТЕ РЕШИТЬ!
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sedinalana
Verified answer
7
1)36x/(x-9)(x+9) +(x-9)/(x+9)=(36x+x²-18x+81)/(x-9)(x+9)=
=(x²+18x+81)/(x-9)(x+9)=(x+9)²/(x-9)(x+9)=(x+9)/(x-9)
2)(x+9)/(x-9)*x/(x+9)=x/(x-9)
3)x/(x-9)-x/(x-9)=0
8
1)(x-2)(x²+2x+4)/(x-2) +2x=x²+2x+4+2x=x²+4x+4=(x+2)²
2)(x+2)²*1/(2-x)(2+x)=(x+2)/(2-x)
3)(x+2)/(2-x)-(x-1)/(2-x)=(x+2-x+1)/(2-x)=3/(2-x)
9
1)2/(2-x)(2+x)-2/(2-x)²=(4-2x-4-2x)/(2-x)²(2+x)=-4x/(2-x)²(2+x)
2)-4x/(2-x)²(2+x)*(2-x)²/4=-x/(2+x)
3)-x/(2+x)-(2-x)/(x+2)=(-x-2+x)/(x+2)=-2/(x+2)
10
1)2x/(x+3)+1/(x-1)-4/(x+3)(x-1)=(2x²²-2x+x+3-4)/(x+3)(x-1)=
=(2x²²-x-1)/(x+3)(x-1)=(2x+1)(x-1)/(x+3)(x-1)=(2x+1)/(x+3)
2)(2x+1)/(x+3)*x/(2x+1)=x/(x+3)
2)x/(x+3)+3(x+4)/(x+3)=(x+3x+12)/(x+3)=(4x+12)/9x+3)=4(x+30/(x+30=4
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173201
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Answers & Comments
Verified answer
71)36x/(x-9)(x+9) +(x-9)/(x+9)=(36x+x²-18x+81)/(x-9)(x+9)=
=(x²+18x+81)/(x-9)(x+9)=(x+9)²/(x-9)(x+9)=(x+9)/(x-9)
2)(x+9)/(x-9)*x/(x+9)=x/(x-9)
3)x/(x-9)-x/(x-9)=0
8
1)(x-2)(x²+2x+4)/(x-2) +2x=x²+2x+4+2x=x²+4x+4=(x+2)²
2)(x+2)²*1/(2-x)(2+x)=(x+2)/(2-x)
3)(x+2)/(2-x)-(x-1)/(2-x)=(x+2-x+1)/(2-x)=3/(2-x)
9
1)2/(2-x)(2+x)-2/(2-x)²=(4-2x-4-2x)/(2-x)²(2+x)=-4x/(2-x)²(2+x)
2)-4x/(2-x)²(2+x)*(2-x)²/4=-x/(2+x)
3)-x/(2+x)-(2-x)/(x+2)=(-x-2+x)/(x+2)=-2/(x+2)
10
1)2x/(x+3)+1/(x-1)-4/(x+3)(x-1)=(2x²²-2x+x+3-4)/(x+3)(x-1)=
=(2x²²-x-1)/(x+3)(x-1)=(2x+1)(x-1)/(x+3)(x-1)=(2x+1)/(x+3)
2)(2x+1)/(x+3)*x/(2x+1)=x/(x+3)
2)x/(x+3)+3(x+4)/(x+3)=(x+3x+12)/(x+3)=(4x+12)/9x+3)=4(x+30/(x+30=4