Arectangle has sides measuring (4x + 5) units and (3x + 10) units. part a: what is the expression that represents the area of the rectangle? show your work to receive full credit. (4 points) part b: what are the degree and classification of the expression obtained in part a? (3 points) part c: how does part a demonstrate the closure property for polynomials? (3 points)

A =

Step-by-step explanation:

b = 3x+10

h = 4x+5

A = bh

A = (3x+10)(4x+5)

A =

A =

It is a second degree equation, since the major exponent is 2.

In the multiplication of polynomials, it is necessary to consider their exponents, because these are added by passing the same variable, and they must always be integers.

12x2+55x+50

Explanation:

the area of a rectangle is: A=length . width

(4x+5)⋅(3x+10)

=12x2+40x+15x+50

=12x2+55x+50

Step-by-step explanation:

(c, 0) i might be wrong so don't put full faith on my answer

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3