Question

sum of two number is 7 and difference of their square is also 7. find the number​

Answer 1

Step-by-step explanation:

let firat number is x and second number is y

so x+y=7 eq1

x²-y²=7

(x+y)(x-y)=7

now put the value

7(x-y)=7

x-y=1 eq2

add eq 1 and 2

2x=8

and x=4

and x+y=7

then 4+y=7

then y=3