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

write the equation in function form then graph the equation 3x-y=5
The traits of populations in the forest ecosystem have changed over time. What caused the traits to change?
Pistachios were priced at 3 pounds for $ 6.99. (a) what were the price per pound? (b) how much would 10 pounds of pistachios cost?
write the equation in function form.then graph the equation x-3y=-9 ???
n^2+7n+15=5 show work please
write the equation in function form then graph the equation 3x-y=5
n^2+7n+15=5 show work please
What is the state at which a net force is zero called
Calculate the speed of a 3.5cm sound wave of frequency 8000Hz
her investment grew 22% to$610 how much did she invest____ ( solve as an equation or fraction)