The area of one side of the rectangular box is (2x + 15) where x represents the width of the box. Find the length and the width of the box.(showw your solution)

Length of rectangle = [2x + 15] / x

Step-by-step explanation:

Given:

Area of rectangle = (2x + 15)

Width of the box = x

Find:

Length and width

Computation:

Length of rectangle = Area of rectangle / Width of the box

Length of rectangle = [2x + 15] / x

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!

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