Answer:
b= -1
Step-by-step explanation:
Step 1: Find out value of x
x-2 = 0
x= 2
Step 2: Substitute value of x in the equation
x^3 + bx^2- 4 = 0
(2)^3 + b (2)^2 - 4 = 0
8 + 4b - 4=0
4 - 4b = 0
4b = -4
b = -1
Answer:right I was just look for the same thing when I tried to work it
Step-by-step explanation:
Remaining angle = 180-90-60=30
by sine rule
8/sin30 = x/sin90
x = 8/0.5=16
