Problema Solution
A number multiplied by itself added to itself equals 30. What are the two possible numbers?
Answer provided by our tutors
Let 'x' represent the number.
x*x + x = 30
........
click here to see the equation solved for x
........
x1 = 5
x2 = -6
Indeed:
5*5 + 5 = 25 + 5 = 30
(-6)*(-6) + (-6) = 36 - 6 = 30
The two possible numbers are 5 and -6.