169k views
3 votes
The sum of a number and its square is 42. Which equation can be used to find the two numbers for which this is true?

User Ian Warner
by
7.3k points

2 Answers

3 votes
x + x squared = 42. The square of the number is the number squared. BY my incredibly accurate guess and check strategy (Works most of the time), 6*6 = 36 + 6 = 42. 
User Sorl
by
6.6k points
7 votes
x+x^2 = 42
Therefore x can equal -7 or 6

The equation which is the answer would be
y=x+ x^(2)
User Wongjn
by
7.4k points