3 years ago

Complete the table by providing justification for each step of the proof. Conjecture: If 4(x2 – 2) = 28, then x is 3 or –3

1 answer:

5 0

<span>4(x2 – 2) = 28
4x^2-8=28 Distributive law of multiplication

4x^2+8=28+8 Additive identity
4x^2=36 ; adding 8 to both sides
x^2 =9, dividing both sides by 4
x= +/- 3</span>

You might be interested in

X f(x)

fgiga [73]

B) f(x) = 3

It’s because all the y values are 3

5 0

2 years ago

Could someone show me how to start this function in excel.

Mrac [35]

Attached is a screenshot of spreadsheet used to do this problem.

You will see the excel functions used for each column. The average score is highlighted in blue.