3 years ago

Please help mememememmeemmemeem

Mathematics

2 answers:

sladkih [1.3K]3 years ago

7 0

I this the answer is A

ololo11 [35]3 years ago

7 0

Answer:

A

Explanation:

You can get this by carefully looking at the graphs to see which ones fit the problem above.
Or, if you’re still unsure about the answer, you can fill in the graph above as well. It would just be more time consuming if you were gonna do that.
If you did all of that, you’d find out that “A” would be precise and correct.

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Form quadratic equation with roots (alpha² + 1/alpha²) and (beta²+1/beta²)

sashaice [31]

Answer:

What equation? Here’s a big tip for you, equations contain an ‘equals sign’ (‘=’) and something that they are equal to. I’m assuming your equation is:

ax2+bx+c=0

I’m going to use p and q for the roots of the equation as they are easier to type than α and β . Thus we have:

a(x−p)(z−q)=0⇒ax2−a(p+q)x+apq=0

Equating coefficients with our initial equation:

x1 : b=−a(p+q)⇒p+q=−ba

x0 : c=apq⇒pq=ca

Now p2+q2=p2+2pq+q2−2pq=(p+q)2−2pq

=(−ba)2−2ca

=b2a2−2ca

=b2−2aca2

3 0

3 years ago