## anonymous one year ago Can Someone please just help me understand exponents better...Like when you have 2x^3 + 5x^5 and when you subtract, multiply and divide what to do with the exponents...My college alg. teacher went over it a bit but i'm super confused.

1. misty1212

HI!!

2. misty1212

add or subtract, don't mess with the exponents, leave them alone

3. misty1212

just like $$200+300=500$$ you would have $$2x^2+3x^2=5x^2$$

4. misty1212

in your example the $$2x^3$$ and $$5x^5$$ are not "like terms" so you cannot combine them they are not like terms because the exponents are different

5. misty1212

for example, if $$x$$ was $$10$$ then $$2x^3=2\times 10^3=2,000$$ and $$5x^5=5\times 10^5=500,000$$ you can add $500,000+2,000$ but the 5 and the 2 don't touch, they are in different places

6. anonymous

Ok thanks! What about when you multiply and divide?