Question

The width of a rectangler figure is 5 units smaller than its length. if its area is 14 units square. find its dimensions

Answer 1

W = L - 5

A = W.L

14 = (L - 5).L

14 = L² - 5L

L² - 5L -14 =0

(L - 7)(L + 2) = 0 {factorized}

L = 7 / L = -2

In this case L would be equal to 7 because a length of anything can't be a negative number

Therefore, W = 2

Answer : Length = 7   Width = 2