difference is 7, product is 30

Answer 1

3 and 10

Answer 2

a * b = 30 .....1
a - b = 7 ..... 2
a = 7 + b ......3

(7+b)(b)=30
b^2+7b-30=0
(using quadratic formula)

b = -10 or b = 3
a = -3 or a = 10

Answer 3

it sucks