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Oduvanchick [21]
2 years ago
15

Can anyone help me pls ( if you can, can you do it on paper and post it with the answer)

Mathematics
1 answer:
Molodets [167]2 years ago
4 0

Answer:

7=a

Step-by-step explanation:

look at image for step by step

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3 years ago
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What are all of the real roots of the following polynomial? f(x) x^4-24x^2-25
Greeley [361]

<u>Answer:</u>

x = ±5

<u>Step-by-step explanation:</u>

We are given the following polynomial function and we are to find all of its real roots:

x^4-24x^2-25

Let y=x^2 so we can now write it as:

y^2-24y-25

Factorizing it to get:

(y^2+y)+(-25y-25)

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Substitute back y=x^2 to get:

\left ( x^2 + 1 \right ) \left ( x^2 - 25 \right )

\left ( x^2 + 1 \right ) \left ( x + 5 \right ) \left ( x - 5 \right )

The quadratic factor has only complex roots. Therefore, the real roots are x = ±5.

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4 years ago
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Amber could have used cross multiplication.

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