Question

(x+2) la puterea a 2 < x(x+3)+5

Answer 1

(x+2)²<x(x+3)+5
x²+4x+4<x²+3x+5
x²-x²+4x-3x<5-4
x<1
x∈(-α, 1)

Answer 2

(x + 2)² < x(x + 3) + 5 
x² + 4x + 4 < x² + 3x + 5
x² + 4x - x² - 3x < 5 - 4
x < 1
S = {-∞; 1}