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Stacey H.
Tutored at the College/Pre-College Level
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Pre-Algebra
TutorMe
Question:

What do they mean by combining like terms?

Stacey H.
Answer:

When you combine like terms in an algebraic expression, you are combining expressions that have the same variables to the same power. For example, like terms would be 3x, -4x, and 7x because they have the same variable attached. Likewise, integers (4, 7, 45, -6) are considered like terms.

Basic Math
TutorMe
Question:

How do you find the percent of change?

Stacey H.
Answer:

The percent of change is usually solved by finding the difference between the values divided by the original value and multiplied by 100 (or new-original/ original * 100).

Algebra
TutorMe
Question:

What is the difference of squares?

Stacey H.
Answer:

The difference of squares is when you have a binomial equation (a2 - b2), the simplified version is the square root of a and the square root of b in (a+b)(a-b)

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