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Brums [2.3K]
3 years ago
12

Can you help me with this please

Mathematics
1 answer:
Natasha_Volkova [10]3 years ago
7 0

Step-by-step explanation:

This is a cube

Formula surface area of a cube = s2 × 6

Where s is one side

Square of 8 = 64

64 × 6 = 384

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3 years ago
Find the​ fourth-degree polynomial function with zeros 4​, -4, 4i ​, and -4i . Write the function in factored form.
Iteru [2.4K]

Given:

A fourth-degree polynomial function has zeros 4​, -4, 4i ​, and -4i .

To find:

The fourth-degree polynomial  function in factored form.

Solution:

The factor for of nth degree polynomial is:

P(x)=(x-a_1)(x-a_2)...(x-a_n)

Where, a_1,a_2,...,a_n are n zeros of the polynomial.

It is given that a fourth-degree polynomial function has zeros 4​, -4, 4i ​, and -4i. So, the factor form of given polynomial is:

P(x)=(x-4)(x-(-4))(x-4i)(x-(-4i))

P(x)=(x-4)(x+4)(x-4i)(x+4i)

P(x)=(x-4)(x+4)(x^2-(4i)^2)           [\because a^2-b^2=(a-b)(a+b)]

On further simplification, we get

P(x)=(x-4)(x+4)(x^2-4^2i^2)

P(x)=(x-4)(x+4)(x^2+16)                [\because i^2=-1]

Therefore, the required fourth degree polynomial is P(x)=(x-4)(x+4)(x^2+16).

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3 years ago
I need help!! Please help me
Zinaida [17]

Answer:

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A horizontal line means y = something  ( the x value will change, but y remains the same)

In this case, the y value is 6

y= 6

8 0
3 years ago
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