Look at the expressions.
-2×^3 -19×^2y -15×y. +11×^2y

what are the like terms?

and are like terms.

Step-by-step explanation:

Recall what "like terms" means in an algebraic expression: Those terms that have the same variables at exactly the same exponents.

so in the expression: the second term and the fourth one are like terms. Notice that both terms have the variables: with the variable "x" to the power 2, and with the variable y to the first power.

and are like terms.

Therefore, those are the only terms you can combine to reduce the expression.

answer: bearing in mind that a rectangle has a perimeter of length + length + width + width.

step-by-step explanation:

p = perimeter

l = length

x=width

p = 2l + 2x

p = 2(l+x)     < ==== perimeter of the base of the box.