Question

Find two integers whose sum is 4 and product is -45

Answer 1

Answer:

let 1st no. be x and other be 4-x

According to the question

x(4-x)=-45

4x-x^2=-45

x^2-4x-45=0

x^2 -9x+5x-45=0

x(x-9) +5(x-9)=0

(x+5)(x-9)=0

x=-5,x=9

if x=-5

then other no. is 4-(-5)=9

and if x=9 then other no. is -5