A rectangular whiteboard has a width of (3x + 4) feet and length of (2x + 5) feet. If the area of the whiteboard is 38 square feet, find the length of the whiteboard. Pls help thx!!
(3x+4)(2x+5)=38 so 6x^2+23x+20=38 so 6x^2+23x-18=0 so x=2/3 and the width is 6.
A little more explanation would be very helpful to those asking questions , ILP !