Question

Write a simplified polynomial expression to represent the area of the rectangle below.

Answer 1

@Hope_nicole please help

Answer 2

what is the equation for area of a rectangle?

Answer 3

l x w

(x+1) (x-1)

Answer 4

so if its l*w, in the picture it gives you both length and width, so you just put those into the equation.

Answer 5

( x + 5) (2x + 4)

Answer 6

How do I multiply that?

Answer 7

yupp!

Answer 8

How do I multiply that?

Answer 9

FOIL the two factors and expand the polynomial.

Answer 10

(x + 5) (2x - 4)

F: x * 2x = 2^2

O: x * -4 = -4

I: 5 * x = 5

L: 5 * -4 = 20

Answer 11

@Mertsj is this correct?

Answer 12

Add the 'x' to the O and I terms and then combine like terms and you will have gotten it.

Answer 13

How do I combine them to like terms?

Answer 14

(x + 5) (2x - 4)

F: x * 2x = 2^2

O: x * -4 = -4x

I: 5 * x = 5x

L: 5 * -4 = 20

Answer 15

2^2 + 5x -4x + 20 ?

Answer 16

\[2x^{2}-4x+10x-20\]Take your terms with a single 'x' and combine them.

Answer 17

How did you get 10x?

Answer 18

5*2x = 10x

Answer 19

Sorry I am confused now where did you get the 2 to multiply with the 5?

Answer 20

\[(2x-4)(x+5)\]
F: \[2x * x = 2x^2\]
O: \[2x * 5 = 10x\]
I: \[-4 * x = -4x\]
L:\[-4 * 5 = -20\]