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babymother [125]
3 years ago
7

I need help please help my test is timed..

Mathematics
1 answer:
kipiarov [429]3 years ago
7 0

Answer:

I think it would be -1  its hard to explain but I am very positive

Step-by-step explanation:

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Write a polynomial function, p(x) with degree 3 that has p(7)=0
MArishka [77]

Answer:

p (x) = x^{3} - 21x^{2}+ 147x - 343

is the required polynomial with degree 3 and p ( 7 ) = 0

Step-by-step explanation:

Given:

p ( 7 ) = 0

To Find:

p ( x ) = ?

Solution:

Given p ( 7 ) = 0 that means substituting 7 in the polynomial function will get the value of the polynomial as 0.

Therefore zero's of the polynomial is seven i.e 7

Degree : Highest raise to power in the polynomial is the degree of the polynomial

We have the identity,

(a -b)^{3} = a^{3}-3a^{2}b +3ab^{2} - b^{3}

Take a = x

        b = 7

Substitute in the identity we get

(x -7)^{3} = x^{3}-3x^{2}(7) +3x(7)^{2} - 7^{3}\\(x -7)^{3} = x^{3}-21x^{2} +147x - 343

Which is the required Polynomial function in degree 3 and if we substitute 7 in the polynomial function will get the value of the polynomial function zero.

p ( 7 ) = 7³ - 21×7² + 147×7 - 7³

p ( 7 ) = 0

p (x) = x^{3} - 21x^{2}+ 147x - 343

4 0
3 years ago
Paco solves the equation -3x-5=1
Levart [38]

Answer:

x= -2

Step-by-step explanation:

-3x-5=1

+5 on each side to balance the equation:

-3x=6

Divide by -3 on each side:

x=-2

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3 years ago
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Plz Help
soldier1979 [14.2K]

the answer is B)

we can check by multiply them

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Answer:

c. infinite solutions

Step-by-step explanation:

y = 10x + 2

This is a line.  A line has infinite points

Therefore this has infinite solutions

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They must split one with the ,2 bros and the other one gets a whole one I think let me check.......
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2 years ago
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