Question

dada a função f(x)= 5x²+6, com x E R E y E R, calcule: a) f(-4) b) f(3) c) f(6/5) d(√2)

Answer 1

Resposta:

Explicação passo-a-passo:

dada a função f(x)= 5x²+6, com x E R E y E R,

calcule:

a) f(-4)

f(4)= 5*4²+6

f(4)=5*16+6

f(4)=80+6

f(4)=86

b) f(3)

f(3)= 5*3²+6

f(3)=5*9+6

f(3)=45+6

f(3)=51

c) f(6/5)

f(6/5)= 5*(6/5)²+6

f(6/5)= 5*36/25+6

f(6/5)= 36/5+6

f(6/5)= (36+30)/5

f(6/5)= 66/5

d(√2)

f(√2)= 5*(√2)²+6

f(√2)= 5*2+6

f(√2)= 10+6

f(√2)= 16