Question

Product of two number is 72.Their sum is 17.Find numbers​

Answer 1

Let one if the number be x.

Then the other number be 17-x.

So x×(17-x)= 72

17x-x^2-72=0

X^2-17x+72=0

×^2-9x-8x+72=0

x(x-9)-8(x-9)=0

(x-9)(x-8)=0

X=8or 9