Given a≠±b and (a^2−b^2)/(a+b)=12, find a−b.

Step-by-step explanation:

a^2 - b^2 factors into (a + b)(a - b)

So now you have

(a + b)(a - b)

    = 12

(a + b)

You are given that a <>   b

So a + b cancels with (a + b) on the top.

a - b = 12

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.