Question

How do you simplify `4f ^ { 2} + 6f ^ { 2} - 4f ^ { 2} + 9f ^ { 2}`?

Answer 1

`15f^2`

Explanation:

take `f^2` common from the term
that will give,
`f^2`(4+6-4+9)
therefore,it will give,
15`f^2`