Wouldn't you just multiply this, which is 3x9 = 27
x³ + 2x² - x - 2 < 0
x³ - x + 2x² - 2 < 0
x(x² - 1) - 2(x² - 1) < 0
(x - 2)(x² - 1) < 0
(x - 2)(x - 1)(x + 1) < 0
by chacking we get the solution
x ∈ (-∞,-1) ∪ (-1,1)
Answer:
26
Step-by-step explanation:
a triangle is 180 degrees add 120 + 34 to get 154
180 -154 = 26
