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

If 6x −3 = −5x +7, then x =? Can someone explain this one?

An unbalanced force of 25 N, E, is applied to a 12-kg mass. What is the acceleration given to the mass?

What is the value of 6P6? A.1 B.36 C.720 D.46,656

13/20-3/10 estimate: closer to 1 or 0?

For f(x)=3x+4, find f(2) and find x such that f(x)=17

what kind of symbiotic relationship is showm between Dori and Marlin

Which of the following nutrient cycles has its largest reservoir in the atmosphere? A) Carbon cycle B) Nitrogen cycle C) Potassium cycle D) Phosphorus cycle E)

Michelle has $12.30 in her purse in 1 cent 5 cent and 25 cent coins. if she has an equal number of each coin type how many coins does Michelle have in her purse

How many months is 0.75 of a year

Which of the following writers did not come from Ireland? a) W. B. Yeats b) James Joyce c) Seamus Heaney d) Oscar Wilde e) none of the above; all came from