Question

Encontre o valor de f(x) = x2 + 3x + 30 para que f(x) = 8. A  -124 B  153 C  118 ​

Answer 1

RESPOSTA:

a) f(×)= x²+3x+30

f(8)= 8²+3.8+30

f(8)= 64+24+30

f(8)= 118

b) f(×)= x²+3x+30

f(-124)= -124²+3. (-124)+ 30

f(-124)= 15.376+(-372)+30

f(-124)= 15.034

c) f(×)= x²+3x+30

f(153)= 153²+3.153+30

f(153)= 23.409+ 459+30

f(153)= 23.898

d) f(×)= x²+3x+30

f(118)= 118²+3.118+30

f(118)= 13.924+354+30

f(118)= 14.308