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

when a laser shines on a screen after passing through two closely spaced slits, you see ___

Which of the following best tells the purpose of the phrase?

The equilibrium price for T-shirts is _____. $5 $10 $25

In the below system, solve for y in the first equation. x − 3y = −6 2x − 7y = 10

Here is the question: Alicia wrote numbers:2,9,15,21 what of the numbers is not a composite number?

A ___ is formed from two pieces of different metals stuck together lengthwise. A. Bimetallic Coil B. Coolant C. Hear Pump D. Furnace

How does weight change as the gravitational acceleration changes and why?

The adult population of a town in 2000 was 400. The child population of the town in 2000 was 120. Both the adult and child populations increased by the same per

I need help please .

What is the distance between points D and H? Round to the nearest tenth of a unit. D(1,3) H(9,8)