Question

Para x = 5, calcule o valor de:a)2x b) 3x+1 c) 9-x d) x-15 e)$x^{2}$ f) 2$x^{3}$-1

Answer 1

x=5
2x = 2.5 =10
3x+1 +3.5 + 1= 16
9-x
9-5=4
x-15
5-15= -10
x²=5² = 25