i need to simplify (3x3 +4x2y2) + (3x2y2 - 7x3)

Question

(3x3 +4x2y2) + (3x2y2 - 7x3)

Answer 1

Mary, it’s often a good idea to “combine like terms”. This means “move all the x³ to one place and all the x²y² to another place.”

 

in this case, this means

3x³-7x³ + 4x²y² + 3x²y²

 

Next, look for a common factor.

What factor is common to all these terms? X²

 

So use the distributive property to pull out the x²:

x² (3x -7x + 4y² + 3y²)

 

Finally add/subtract the “like terms”

what is (3x-7x)? 

What is (4y²+3y²)?

Write those quantities in place of the question marks)
x²(?x + ?y²)