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3 years ago

Find f(-2) if f(x)= x^4 + 2x^2-1 Answer:?

Mathematics

1 answer:

Alika [10]3 years ago

6 0

Answer:

$\huge{f( - 2) = 23}$

Step-by-step explanation:

To find f(-2) substitute the value of x that's -2 into f(x) and solve

We have

$f( - 2) = ({ - 2})^{4} + 2 ({ - 2})^{2} - 1 \\ = 16 + 2(4) - 1 \\ = 15 + 8 \\ = 23 \: \: \: \: \: \: \:$

Hope this helps you

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Answer:

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3 years ago

What is the multiple zero and multiplicity of f(x) = x3 + 10x2 + 25x?

elena-s [515]

Answer:

The multiple zero is $x=-5$ .

The multiplicity is 2

Step-by-step explanation:

The given function is

$f(x)=x^3+10x^2+25x$

To find the zero of this function, we equate it to zero.

$\Rightarrow x^3+10x^2+25x=0$

We factor to obtain;

$x(x^2+10x+25)=0$

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Either $x=0$ or $(x+5)^2=0$

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4 years ago