Answer:
c) (x + 2)(x + 2i)(x - 2i)
Step-by-step explanation:
x^3 + 2x^2 + 4x + 8
= (x^3 + 2x^2) + (4x + 8)
= x^2( x + 2) + 4(x + 2)
= (x + 2)(x^2 + 4)
= (x + 2)(x^2 - 4i^2) ---------------------------->(i^2 = -1)
= (x + 2)(x + 2i)(x - 2i)
Answer:
The answer is D. (-2,10)
Step-by-step explanation:
Answer:
Whitney = 6
Sara = 9
Hannah = 3
Step-by-step explanation:
Let :
Whitney = x
Sara = x + 3
Hannah = x / 2
Hannah's age + Whitney's age = Sarah's age
x / 2 + x = x + 3
1.5x = x + 3
1.5x - x = 3
0.5x = 3
x = 3/0.5
x = 6
Whitney = 6
Sara = x +3 = 6 + 3 = 9
Hannah = x/2 = 6/2 = 3