3 years ago

Factor completely: x2-4

Mathematics

1 answer:

Lelechka [254]3 years ago

5 0

Answer:

(x+2)(x-2)

Step-by-step explanation

x times x equals x^2, 2 times x equals 2x, -2 times x equals -2x, and 2 times -2 equals -4. If you add that up, the x-values cancel out, leaving the x^2 and the -4. (This explanation is working it backwards which is the easiest way IMO)

You might be interested in

****BRAINLIEST GOES TO THE FIRST CORRECT ANSWER****

Ahat [919]

2x - 24 = x - 2

x = 22

Hope this helps!

6 0

3 years ago

Help!!!!!!!! i have no clue

siniylev [52]

Answer: Non-proportional

Step-by-step explanation:

The unit rate for the gas per gallon is $3.17. You want to find out if that is equal to the amount you would pay for 10 gallons at once. If you multiply the unit rate by ten, you would get 10 gallons = $31.70

So...you know that it is not proportional

6 0

2 years ago

7 times a number is decreased by 8, the answer is the same as 3 times the number

lesya [120]

2 is the answer you're looking for.

2*7=14

14-8=6

2*3=6

3 0

3 years ago

8y-2x=-40 put the following equation in slope intercept form simplyifing all fractions