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solmaris [256]
2 years ago
9

What is the y-intercept? f(x) = -2x2 + 4x - 6

Mathematics
1 answer:
nekit [7.7K]2 years ago
8 0
F(x)=-2x2+4x-6
f(0)=-2x2+4x0-6
f(0)=-4+0-6
f(0)=-10
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Step-by-step explanation:

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Which is 196 written as a power of a number?<br><br> A) 98^2<br> B) 13^2<br> C) 49^4<br> D) 14^2
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Its not A. because , 98^2 = 9,604
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3 years ago
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3 years ago
Read 2 more answers
If alpha and beta are the zeroes of the polynomial f(x)= xsquare -8x +gamma such that alpha - beta = 2 find the value of gamma.
Komok [63]

Answer:

Γ = 15

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with a = 1, b = - 8 and c = Γ , then

sum of zeros α + β = - \frac{b}{a} = - \frac{-8}{1} = 8

product of zeros = αβ = \frac{c}{a} = Γ

Given α - β = 2 , then

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α² - 2αβ + β² = 4 → (1)

and

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α² + 2αβ + β² = 64 → (2)

Add (1) and (2) term by term

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α² +β² = 34

Substitute α² + β² = 34 into (1)

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- 2αβ = - 30 ( divide both sides by - 2 )

αβ = 15

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Thus

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3 years ago
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