Question

Find a number whose sum is 40 and the product is 375

Answer 1

Step-by-step explanation:

let the required no. be x

sum of no.= ( 40-x )

then, x( 40- x ) =375

40x-x^2 = 375

x^2 -40x + 375 = 0

x^2-25x-15 x+ 375= 0

x( x-25 ) - 15 (x-25) =0

(x-25) (x -15) =0

now, x-25=0

x= 25

and x-15=0

x=15

hence, the required numbers be 25 and15