ineedhelp201833 ineedhelp201833
  • 03-12-2018
  • Mathematics
contestada

Evaluate the expression x^2+8x-4 if x=3

Respuesta :

rthanvi088 rthanvi088
  • 03-12-2018

Answer:

29

Step-by-step explanation:

first sub in 3 wherever x is shown

(3)^2+8(3)-4 the use bedmas (brackets,exponents,division,multiplication,addition,subtraction)

solve brakets first

(3)^2=9

8(3)=24

rewrite equation ; 9+24-4=29

Answer Link

Otras preguntas

Can I get the answer ?
If the simple interest on ​$3000 for 7 years is ​840$​, then what is the interest​ rate?
qasffffffffsafaasfsfsfsf
England allowed the colonies to trade with other countries without tax their profits (money). true or falsei need helpppp
2X+20 and X+60 I have to solve for X
Evaluate the expression for x = 4, y=-2, z= -3. 2² + 8zy - y²
(Help me please) Do you think the colonist's response to the Stamp Act was justified? Do you think you would have been a "revolutionary" in 1776? Why or why not
Coach McGee uses the table to show her team’s current basketball shot average compared to previous years. 2008 2009 2010 –5.8 4.4 StartFraction 37 Over 10 EndF
6CO2 + 6H20 --> C6H12O6 + 602 What is the total number of grams of water needed to make 6.2 moles of CoH1206? 79.5 g 402.9 670.2 g 381.2 g
What’s the solution to this problem-5/2=3/4+n