riosd920
17.03.2020 •
Mathematics
What is the mean, median, and mode of 6,2,3,4,4,2,8,5,2
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Ответ:
The part of her answer is incorrect is that f(x)=g(x) at x=3, because this value is not in the solution of the equation f(x)=g(x)
Step-by-step explanation:
f(x)=g(x)
2x+1=2x²+1
This is a quadratic equation. Equaling to zero: Subtracting 2x and 1 from both sides of the equation:
2x+1-2x-1=2x²+1-2x-1
0=2x²-2x
2x²-2x=0
Common factor 2x:
2x(x-1)=0
Two solutions:
x=0
and
x-1=0
Solving for x: Adding 1 both sides of the equation:
x-1+1=0+1→x=1
Then f(x)=g(x) at x=0, and x=3