Question

Para x=5 , calcule o valor de:

A)2x
B)3x + 1
C)9 - x
D)x - 15
E)x²
F)2x³ - 1

Answer 1

A)2x = 2.5 = 10

B)3x + 1 = 3.5 +1 = 15 +1= 16

C)9 - x = 9 -5 = 4

D)x - 15 = 5 -15 = -10

E)x² = 5² = 5.5 = 25

F)2x³ - 1 = 2.5³ -1= 2.125 -1 = 249

Answer 2

Explicação passo-a-passo:

A) 2 · 5 = 10

B) 3 · 5 + 1 = 15 + 1 = 16

C) 9 - 5 = 4

D) 5 - 15 = -10

E) 5² = 5 · 5 = 25

F) 2·5³-1 = 2·5·5·5 -1 = 2·125-1 = 250 - 1 = 249