The answer is 13/510 because 17 as a fraction is 17/1 and when dividing you switch the fraction upside down which makes it 1/17 and 13/30 times 1/17 is 15/510.
Im gonna assume you are solving for x, the equation (x + 3)2 = 49 x is equal to 21.5 or 21 and 1/2. however the rest aren’t equations they’re just x = number and there isn’t much to do with that