Combining like terms with variable factors, 12b^2 + 9b^2

The video tutorial explains basic addition and the concept of combining like terms in algebra. It highlights that terms with the same variable factors can be combined, while those with different variables cannot. The tutorial also demonstrates combining terms with similar variable factors.

What is the result of adding 12 + 9?

• 22

• 19

• 20

• 21

How do you simplify 12X + 9X?

• 12X + 9X

• 21X

• 12X9X

• 21

Why can't 12X + 9X^2 be combined?

• They have different coefficients

• They have different variable factors

• They are already simplified

• They are not like terms

Which of the following expressions can be combined?

• 12X + 9X^2

• 12X + 9Y

• B^2 + B^2

• X + Y

What is the result of combining B^2 + B^2?

• B^2

• B^4

• 2B

• 2B^2