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3 years ago

Factor the polynomial completely x^2-x-20

Mathematics

2 answers:

vagabundo [1.1K]3 years ago

7 0

Answer:

$\displaystyle [x + 4][x - 5]$

Step-by-step explanation:

Find two quantities that when differed to −1, they also multiply to −20, and those numbers are 4 and −5.

I am joyous to assist you anytime.

Strike441 [17]3 years ago

5 0

Answer:

(x − 5) (x + 4)

Step-by-step explanation:

x² − x − 20

Factor using AC method:

1 × -20 = -20

Factors of -20 that add up to -1: -5 and 4

Divide by 1 and reduce: -5/1 and 4/1

(x − 5) (x + 4)

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Answer:

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Step-by-step explanation:

143°=∠c+∠b (exterior angle property)

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∠b=143-61

∠b=82°

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2 years ago

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3 years ago

Which of the following is a factor of the polynomial below and why p(x)=4x^3-10x^2-4x-6

andrew-mc [135]

The greatest common factor is 2.

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3 years ago

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blsea [12.9K]

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3 years ago

Which of the following is a valid comparison between the possible minimum and maximum values of the function y = -x2 + 4x - 8 an

Arturiano [62]

Answer:

The maximum value of the equation is 1 less than the maximum value of the graph

Step-by-step explanation:

We have the equation $y=-x^2+4x-8$ .

We can know that this graph will have a maximum value as this is a negative parabola.

In order to find the maximum value, we can use the equation $x=\frac{-b}{2a}$

In our given equation:

a=-1

b=4

c=-8

Now we can plug in these values to the equation

$x=\frac{-4}{-2} \\\\x=2$

Now we can plug the x value where the maximum occurs to find the max value of the equation

$y=-(2)^2+4(2)-8\\\\y=-4+8-8\\\\y=-4$

This means that the maximum of this equation is -4.

The maximum of the graph is shown to be -3

This means that the maximum value of the equation is 1 less than the maximum value of the graph

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3 years ago