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max2010maxim [7]
3 years ago
10

If α and β are zeroes of the polynomial q(x)=x2-7x+10, then find the value of (α+β)2-4αβ

Mathematics
1 answer:
ra1l [238]3 years ago
6 0

Answer:

9

Step-by-step explanation:

\alpha + \beta = -b/a = -(-7)/1 = 7

\alpha \beta = c/a = 10/1 = 10

(\alpha + \beta )^2 - 4 \alpha \beta \\ 7^2 - 4 × 10 \\ 49 - 40 \\ = 9

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4 0
3 years ago
X=-4y<br> 3x+2y=20 <br> Substitution
nadezda [96]

Answer: y= -2; x = 8

Step-by-step explanation:

X=-4y.......equation 1

3x+2y=20......equation 2

Substitute the value of x into equation 2

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7 0
3 years ago
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Aliun [14]

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7 0
2 years ago
Ben, Fran and Stan are posting funny memes online. Ben's funny memes got 40% more likes than Stan's. Fran's got 20% fewer likes
Ilya [14]

Answer:

60%

Step-by-step explanation:

Given that Ben, Fran and Stan post funny memes online.

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Then Ben's likes would be x+40 %

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Andre45 [30]

Answer:

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Step-by-step explanation:

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3 years ago
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