Question

if 2 sides of a rectangle are 7x-3 yards, and the other 2 are 7x+3 yards then what is the area?

Answer 1

rectangle area = l*w

Answer 2

i know dat :/

Answer 3

but wat is the lenght times the width in this particular equation?

Answer 4

i know that, but i don't know how to figure it out with all of the x's

Answer 5

multiply term by term \((7x-3)(7x+3)=(7x*7x)+(7x*3)-(7x*3)-(3*3)\)

Answer 6

or just remember that \((a-b)(a+b)=a^b-b^2\)

Answer 7

\((a-b)(a+b)=a^2-b^2\) *

Answer 8

so that would mean that the answer is what?

Answer 9

hi

Answer 10

hi

Answer 11

@AlexandervonHumboldt2

Answer 12

(7x+3)*(7x-3)=49x^2-9
(a-b)*(a+b)=a^2-b^2

Answer 13

ok thanks :)