Question

Se f(x) =3x²-5x + 3, calcule:

a) f(2)
b) f(-1)
c) f(0 ​

Answer 1

Bom, vamos lá!

a)f(2)= 5

b)f(-1)=11

c)f(0)=3

f(2)= 3x²-5x+3

f(2)= 3.2²-5.2+3

f(2)=3.4-10+3

f(2)= 12-10+3

f(2)= 2+3

f(2)= 5

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f(-1)= 3x²-5x+3

f(-1)= 3. (-1)²-5.(-1)+3

f(-1)= 3.1+5+3

f(-1)=3+5+3

f(-1)=11

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f(0)= 3x²-5x+3

f(0)= 3.0²-5.0+3

f(0)= 3.0-0+3

f(0)= 0-0+ 3

f(0)=3

Espero ter ajudado <3