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monika59
@monika59
July 2022
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203 и 205 помогите. пж
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Evgenia4836
Verified answer
203.1
4x²-2x-2=2x-3
4x²-2x-2-2x+3=0
4x²-4x+1=0
2x²-1=0
x²=1/2
x=+-√1/2
3.
4*2^x-8*2^x-16*2^x=5*5^x-25*5^x
-20*2^x=-20*5^x
2^x=5^x
x=0
2.
x²-2x+2=2
x²-2x=0
x(x-2)=0
x=0 x=2
4.
x+2=0
x=-2
205.1
x²*3^x-3*3^x=0
3^x(x²-3)=0
x=+-√3
2.
x²*5^x-25*5^x=0
5^x(x²-25)=0
x=+-5
3.
x³*3^x+27*3^x=0
3^x(x³+27)=0
x= -3
4.
x³*8^x-8*8^x=0
x³=8
x=2
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Answers & Comments
Verified answer
203.14x²-2x-2=2x-3
4x²-2x-2-2x+3=0
4x²-4x+1=0
2x²-1=0
x²=1/2
x=+-√1/2
3.
4*2^x-8*2^x-16*2^x=5*5^x-25*5^x
-20*2^x=-20*5^x
2^x=5^x
x=0
2.
x²-2x+2=2
x²-2x=0
x(x-2)=0
x=0 x=2
4.
x+2=0
x=-2
205.1
x²*3^x-3*3^x=0
3^x(x²-3)=0
x=+-√3
2.
x²*5^x-25*5^x=0
5^x(x²-25)=0
x=+-5
3.
x³*3^x+27*3^x=0
3^x(x³+27)=0
x= -3
4.
x³*8^x-8*8^x=0
x³=8
x=2