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If x + y = 13 and xy = 40, then x and y = *

If x + y = 13 and xy = 40, then x and y = *
asked 9.1k views
16 votes
If x + y = 13 and xy = 40, then x and y = *

asked
User RobertL
by
7.9k points

1 Answer

7 votes

Answer:

  • rearrange: y=13-x
  • xy=40 --> x(13-x)=40
  • 13x-x^2=40
  • x=8 and y= 5
answered
User SebK
by
8.2k points
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