katmansilla44766
katmansilla44766 katmansilla44766
  • 15-08-2019
  • Mathematics
contestada

4x^2 - x - 7 when x = -2

Respuesta :

yungsherman
yungsherman yungsherman
  • 15-08-2019

Answer:

11

Step-by-step explanation:

Lets plug in -2 for x

Remember that a negative number times a negative number is positive, so (-2)² is positive 4.  Also remember subtracting by a negative means you are adding the number.

[tex]4x^2 - x - 7 \\\\4(-2)^2 - (-2) - 7 \\\\4(4) + 2-7\\\\16 -5\\\\11[/tex]

So the answer is 11

Answer Link

Otras preguntas

Josephus was a Jewish historian. True False
Cheyenne is making a recipe that uses5 cups of beans and 2 cups of carrots.Which combination below uses the same ratio of beans to carrots?
HELP PLEASE In the story “Old Man of the Temple” by R. K. Narayan, what experience does the narrator have in the Taxi on his way to Kumbum? A. His driver bec
How do I model and solve algebriac expressions?
I need some cool things to do with windows command prompt.
Who ran for president in 1824? (Name all)
What orgin is josie?????
I was born on February 5,2006 how old would I be nowA.11B.9C.13D.10
y+4=-2(x-1) slope intercept form
1. 2f + 10 as distributive property. A. f(2 + 10) B. 2 (f + 5) C. 2(F + 10) Please Help It Is Urgent!