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lyudmila [28]
2 years ago
5

Need help, will give 100 points

Mathematics
2 answers:
Monica [59]2 years ago
6 0

Answer:

Already answered on the other one

Step-by-step explanation:

tiny-mole [99]2 years ago
4 0
  • f(x)=2x²-x
  • g(x)=x+1

#1

\\ \rm\Rrightarrow (gof)(-1)

\\ \rm\Rrightarrow g(f(-1))

\\ \rm\Rrightarrow g(2(-1)^2-(-1))

\\ \rm\Rrightarrow g(2+1)

\\ \rm\Rrightarrow g(3)

\\ \rm\Rrightarrow 3+1

\\ \rm\Rrightarrow 4

#2

\\ \rm\Rrightarrow (fog)(-1)

\\ \rm\Rrightarrow f(g(-1))

\\ \rm\Rrightarrow f(-1+1)

\\ \rm\Rrightarrow f(0)

\\ \rm\Rrightarrow 2(0)^2-0

\\ \rm\Rrightarrow 0

#3

\\ \rm\Rrightarrow (gof)(x)

\\ \rm\Rrightarrow g(f(x))

\\ \rm\Rrightarrow g(2x^2-x)

\\ \rm\Rrightarrow 2x^2-x+1

#4

\\ \rm\Rrightarrow (fog)(x)

\\ \rm\Rrightarrow 2(x+1)^2-x

\\ \rm\Rrightarrow 2(x^2+2x+1)-x

\\ \rm\Rrightarrow 2x^2+4x+2-x

\\ \rm\Rrightarrow 2x^2+3x+2

#5

No they are not equal

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