~ Like Terms ~

~ My definition of like terms is when the expression have the same terms. Yes 100p and 3000p can be combine because they have the same variable. P and p^2 are not like terms because then first p is to the first power and the other is to the second and the exponent matters. so we can't combine them. We can't combine 2d+2f because they are not like terms. They don't have the same variable. An expression can't have an equal sign, the reason why is because equation have equal sign. And equation and expression are not the same. A perimeter is the distance around a shape. ~