Question

Find two consecutive whole numbers whose product is 72

Answer 1

x= 1st integer
x+1= 2nd integer
x(x+1) = 72
x² + x + 72
x²+ 1x -72 = 0
(x+9)(x-8)
if u solve u'll get x=-9 and x=8
x can't be negative.
so x=8
x=8=1st integer
x+1=8+1=9=2nd integer.