Question

me ajudem com essas questões

Answer 1

10- a) x+11= 3+11= 14
b) 2x-2= 2.3-2= 6-2 = 4
c) 3x-x= 3.3-3= 9-3 = 6
d) 5x+8 = 5.3+8 = 15+8 = 23
e) -x-4 = -3-4 = -7
f) x³= 3³ = 3.3.3 = 27
g) x³-x² = 3³ - 3² = 3.3.3 - 3.3 = 27-9 = 18
h) x³ + x² + 9 = 3³ + 3² + 9 = 27+9+9= 45
i) 3x³ = 3.(3)³ = 3.27 = 81
j) -x³= -3³ = -27