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

Olá!

$a) \: 2 \times 5 = \\ \boxed{10}$

$b) \: 3 \times 5 + 1 = \\ 15 + 1 = \\ \boxed{16}$

$c) \: 9 - 5 = \\ \boxed{4}$

$d) \: 5 - 15 = \\ \boxed{ - 10}$

$e) \: {5}^{2} = \\ \boxed{25}$

$f) \: 2 \times {5}^{3} - 1 = \\ 2 \times 125 - 1 = \\ 250 - 1 = \\ \boxed{249}$