16Hit1600
Advanced MathMediumNegative solution of a quadratic given the positive one

Advanced Math practice question

The equation x² + x = 30 has two solutions, one of which is 5. What is the other solution?

Answer: -6

x² + x − 30 = (x − 5)(x + 6), so the other solution is −6.

Common wrong answers

If you answered 6
6 has the sign wrong.
If you answered 25
25 is 5².
If you answered -5
−5 negates the given solution.

More Advanced Math questions

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