Question

Alguém corrige essa conta y= -x²+x+6, :

a) -2 b) -1 c) 1 d) 2
- ( - 2 ) ^2 + ( - 2 ) + 6 - ( - 1 ) ^2 + ( -1 ) + 6 - ( 1 )^2 + ( 1 ) + 6 - ( 2 ) + ( 2) +6
- ( + 4 ) - 2 + 6 - ( + 1 ) ^2 - 1 + 6 - 1 + 7 0 + 6
- 4 - 2 + 6 - 1 - 1 + 6 6 6
- 6 + 6 - 2 + 6
0 4

Answer 1

f(x) = - x² + x + 6

a) f(-2)

f(-2) = - (-2)² - 2 + 6
f(-2) = - 4 + 4
f(-2) = 0

b) f(-1)

f(-1) = - (-1)² - 1 + 6
f(-1) = - 1 - 1 + 6
f(-1) = - 2 + 6
f(-1) = 4

c) f(1)

f(1) = - (1)² + 1 + 6
f(1) = - 1 + 1 + 6
f(1) = 6

d) f(2)

f(2) = - (2)² + 2 + 6
f(2) = - 4 + 8
f(2) = 4

Answer 2

Resposta:

e a

Explicação passo-a-passo: