16Hit1600
Advanced MathEasy–MediumProduct of the roots of a difference of squares

Advanced Math practice question

The equation x² − 16 = 0 has two solutions. What is their product?

Answer: -16

The solutions are 4 and −4, whose product is −16.

Common wrong answers

If you answered 0
0 is their sum.
If you answered 8
8 is their difference.
If you answered 16
16 has the sign wrong; one root is negative.

More Advanced Math questions

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