F(x) = x3 + 5x2 - x - 5 What are the factors of f(x)?
1 answer:
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Answer:
x ≈ - 9.41, x ≈ - 6.59
Step-by-step explanation:
Given
x² + 16x + 62 = 0 ( subtract 62 from both sides )
x² + 16x = - 62
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(8)x + 64 = - 62 + 64
(x + 8)² = 2 ( take the square root of both sides )
x + 8 = ± ( subtract 8 from both sides )
x = - 8 ±
Hence
x = - 8 - ≈ - 9.41
x = - 8 + ≈ - 6.59
The formula of the surface area of the rectangular prism is equal:
where:
l - length
w - width
h - height
We have:
l = 5m
w = 8m
h = 9m
Substitute:
where:
l - length
w - width
h - height
We have:
l = 5m
w = 8m
h = 9m
Substitute: