2 years ago

The sum of two numbers is 8, and their product is 80.

1 answer:

6 0

From their sum, the numbers are ' x ' and ' 8 - x ' .

From their product, x(8 - x) = 80 .

When you massage and manipulate this equation into the standard
quadratic form, you have

 x² - 8x + 80 = 0 .

Applying the quadratic formula to tease out the solutions of this equation,
we find that they are

  x = 4 + 64 i
and
  x = 4 - 64 i

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