64-81d^2
How do I do this?

It is not clear what you want.

64=8²

81d²=(9d)²

64-81d²=8²-(9d)²=(8-9d)(8+9d)

Is this OK?

a is the correct

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.