Answer:
Step-by-step explanation:
x²-3x-2=0
delta = b² - 4ac a=1 b = -3 c = -2
delta = (-3)² - 4(1)(-2) =17
X1 = (3-√17)/2 ≃ - 0.56
x2 =(3+√17)/2 ≃3.56
180
anything above 28
Seven times 4 is 28, times any number is anything 28 and above
4.5
