Ответ:
а) x₁=0, x₂=2
x²+2x+1-(2x-1)²=0x²+2x+1-4x²+4x-1=0x²+2x-4x²+4x=0-3x²+6x=0-3x*(x-2)=0x*(x-2)=0x=0x=2b) x₁=-4, x₂=-2/716x²+24x+9-(3x-1)²=016x²+24x+9-9x²+6x-1=07x²+24x+9+6x-1=07x²+30x+8=07x²+28x+2x+8=07x*(x+4)+2x+8+0(x+4)*(7x+2)=0x+4=07x+2=0x=-4, 2/7
в) x₁=-4/5, x₂=0(2-x-2(3x+1))*(2-x+2(3x+1))=0(2-x-6x-2)*(2-x+2(3x+1))=0(-x-6x)*(2-x+6x+2)=0-7x*(4+5x)=0x*(4+5x)=0x=04+5x=0x=0x=-4/5г) x₁=-8, x₂=2/5(5-2x-3(x+1))*(5-2x+3(x+1))=0
(5-2x-3x-3)*(5-2x+3(x+1))=0(2-2x-3x)*(5-2x+3x+3)=02-5x=08+x=0x=2/58+x=0x=2/5x=-8
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Answers & Comments
Ответ:
а) x₁=0, x₂=2
x²+2x+1-(2x-1)²=0
x²+2x+1-4x²+4x-1=0
x²+2x-4x²+4x=0
-3x²+6x=0
-3x*(x-2)=0
x*(x-2)=0
x=0
x=2
b) x₁=-4, x₂=-2/7
16x²+24x+9-(3x-1)²=0
16x²+24x+9-9x²+6x-1=0
7x²+24x+9+6x-1=0
7x²+30x+8=0
7x²+28x+2x+8=0
7x*(x+4)+2x+8+0
(x+4)*(7x+2)=0
x+4=0
7x+2=0
x=-4, 2/7
в) x₁=-4/5, x₂=0
(2-x-2(3x+1))*(2-x+2(3x+1))=0
(2-x-6x-2)*(2-x+2(3x+1))=0
(-x-6x)*(2-x+6x+2)=0
-7x*(4+5x)=0
x*(4+5x)=0
x=0
4+5x=0
x=0
x=-4/5
г) x₁=-8, x₂=2/5
(5-2x-3(x+1))*(5-2x+3(x+1))=0
(5-2x-3x-3)*(5-2x+3(x+1))=0
(2-2x-3x)*(5-2x+3x+3)=0
2-5x=0
8+x=0
x=2/5
8+x=0
x=2/5
x=-8