3 years ago

Find the x-intercepts of the following polynomial function'' f (x) = x^2 - 2x - 80

Mathematics

1 answer:

pychu [463]3 years ago

7 0

Answer:

(-8 , 0)

(10 , 0)

Step-by-step explanation:

(-8)^2 - 2(-8) - 80 = 0

(10)^2 - 2(10) - 80 = 0

then (-8 , 0) and (10 , 0) are x-intercepts Of the polynomial f

the others are not because (for instance):

(8)^2-2(8)-80 =

:)-32

You might be interested in

Multiply 2/5 x 15/16 x 3/4

Sonbull [250]

$2/5 * 15/16 * 3/4 = 9/32$

8 0

3 years ago

Read 2 more answers

Addison paid $1.59 for gum and $1.29 for a package of notebook paper. She gave the cashier a $5 bill. If the tax was $0.14, how

Neko [114]

Answer:

$2.68

Step-by-step explanation:

7 0

3 years ago

Answer this math quedtion 40s+(2b)s+200

Elina [12.6K]

Is it supposed to be equal to something, maybe "0"? You wouldn't be able to solve this without that.

5 0

3 years ago

Simplify 3 - b (7b + 2) + 3b - (11 - b)

nirvana33 [79]

Answer: -7b² + 2b - 8

Step-by-step explanation:

Given expression

3 - b (7b + 2) + 3b - (11 - b)

Expand parentheses and apply the distributive property if necessary

=3 - b · 7b - b · 2 + 3b - 11 + b

=3 - 7b² - 2b + 3b - 11 + b

Combine like terms

=-7b² + (3b - 2b + b) + (3 - 11)

= $\boxed{-7b^2+2b-8}$

Hope this helps!! :)

Please let me know if you have any questions

8 0

3 years ago

A recipe calls for 2 2/3 teaspoons of salt.you can only find 3 of your measuring spoons:a 1/2 teaspoon,a 1/8 teaspoon,and a 1/6

anyanavicka [17]

U would measure it with the teaspoon and the 1/6 teaspoon
you would need 2 use the 1/2 teaspoon 4 times to get 2 teaspoons and the `1/6 teaspoon 4 times to get 2/3.

1/6+1/6=2/6*2=4/6 =2/3

hope this helps

7 0

3 years ago