Translate to an equation:
x + x2 = 30
Solve for x:
x2 + x - 30 = 0
(x + 6)(x - 5) = 0
x = 5, -6
Chat with our AI personalities
11,10
The average of a set of numbers is defined as the sum of those numbers divided by the number of numbers. If the average is given, multiply that by number of items in the set including the missing number. Subtract the sum of given numbers from this quotient and the missing number is revealed.
The numbers are 21 and 63.
Well, honey, if the sum of 4 numbers is 83095 and two of them are 29854 and 17031, then the sum of those two is 46885. Subtract that from 83095 and you get 36210. Since the third and fourth numbers are the same, divide that by 2 and you get 18105. So, the third number is 18105.
example for sum of rational numbers is 1/3 + 1/5 Example for sum of irrationals is Pi + e where e is is base of natural log Another is square root of 2 + square root of 3.