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Solnce55 [7]
2 years ago
12

A square number and a multiple of 3 have a total of 90 what r the 2 numbers

Mathematics
1 answer:
Alecsey [184]2 years ago
7 0

Hello,

Let's x² the square number

and 3*y the multiple of 3.

x^2+3y=90\\\\\boxed{y=-\dfrac{1}{3} x^2+30}\\\\

2 solutions : for (x,y) as integers : (-6,18) and (6,18)

but one solution for (x²,3y) as integers :<u> (36,54) </u>

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