Question

the sum of two number is 90 and the product is 2009 ​

Answer 1

Answer:

Step-by-step explanation:

let the two numbers be x and y

now, the sum of two number = 90

or, x+y=90........(i)

and, the product of the number = 2009

or, xy=2009......(ii)

now from (i) we have ,

x=90-y

now substituting the value of x , we have

(90-y)y=2009

or, 90y-y²=2009

using the quadratic formula, we have

a=-1    b=90    c=-2009