Question

Oblicz wartość poniższych wyrażeń dla x=3
a) 2x+5
b) 2(x+5)
c) x(2+5)

Answer 1

A) = 2x3 +5 = 11
b) = 2(3+5) = 16
c)= 3x7= 21

Answer 2

A)
2 * 3 + 5 = 6 + 5 = 11
b)
2 * (3 + 5) = 2 * 8 = 16
c)
3 * (2 + 5) = 3 * 7 = 21