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o lessons 31-33
the rectangle shown below has length of 4x + 3 and a width of 5x.
find expressions of its perimeter and area.
lesson 31
4x + 3
5x

perimeter= 2(4x+3) + 2(5x)

Area= (4x+3)(5x)

Step-by-step explanation:

Perimeter is the sum of total length and width. Perimeter is the outside. Like a fence.

A rectangle has two equal lengths and two equal widths.

If the length is 4x + 3, we have two of those. (4x + 3) + (4x + 3)

Which can be simplified as 2(4x+3)

If the width is 5x, we have two of those.

5x + 5x

Which can be simplified as 2(5x)

So length + length + width + width=

(4x+3) + (4x+3) + (5x) + (5x)

Simplified as

2(4x+3) + 2(5x)

Area is length multiplied by width. Area is the inside. Like the property inside the fence.

Length: 4x + 3 Multiplied by width: 5x

(4x+3) × (5x)

Properly written as (4x+3)(5x)

yes

step-by-step explanation:

give me the question

\

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb