Question

if its length is 2x-3 feet and its width is 5x+1 feet, what is the actual length and width of the rectangle ? ( a rectangle has an area of 1281 square feet.)

Answer 1

( 2x - 3) X ( 5x +1) = 1281

*it's a quadratic

10x² -13x -3 = 1281  * move 1281 to the left side to equal zero

10x² -13x - 1284= 0
 

and solve to look for the zeros....

Do you know how to?