Question

Determine o valor numérico de:
A)3.(x-8),para x=12
B) 3x+x3,para x=4
C)x3-x2 -2x,para x=-2
D)3x+x/4-y,para x=4 e y=5

Answer 1

Explicação passo-a-passo:

A)3.(x-8),para x=12

3.(12-8) = 3(10) = 30

B) 3x+x3,para x=4

3(4) + 3(4) = 12+ 12 = 24

C)x3-x2 -2x,para x=-2

x³ - x² - 2x = (-2)³ - (-2)² - 2(-2)

-8 - 4 +4 = -8

D)3x+x/4-y,para x=4 e y=5

[3(4) + 4) ] / (4-5)

(12 + 4)/(-1)

(16)/-1

-16