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

Describes how substances react or changes to form new substances

I need help please with 34 and 36

From where do the soil in the Indus Valley receive its rich silt

How many calories should a 11 year old eat to lose weight?

Which of the following is the correct factored form of the given equation? 4x 2 - 25 = 0 (4x - 5)(x + 5) = 0 (2x - 5)(2x + 5) = 0 2(x - 5)² = 0

julian is mixing drops of food coloring to create green frosting for a cake he uses 18 drops of yellow dye and 12 drops of blue dye find the ratio of drops of b

How does the surface area of a mitochondrial or chloroplast affect its energy output

(picture) is this the correct way to solve 19?

although the supreme court functions primarily as an appellate court, it is the courts of original juisdiction in certain kinds of cases. what are those?

What is the term for a government where power is concentrated?