Answer:
x + y = 18
x^2 + y^2 = 170
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Substitute and solve for "x":
x^2 + (18-x)^2 = 170
x^2 + 18^2 - 36x + x^2 = 170
2x^2 -36x + 154 = 0
---
x^2 - 18x + 77 = 0
(x-11)(x-7) = 0
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If x = 11, y = 7
If x = 7, y = 11
Step-by-step explanation:
hope it helps you
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Answers & Comments
Answer:
x + y = 18
x^2 + y^2 = 170
----
Substitute and solve for "x":
x^2 + (18-x)^2 = 170
x^2 + 18^2 - 36x + x^2 = 170
2x^2 -36x + 154 = 0
---
x^2 - 18x + 77 = 0
---
(x-11)(x-7) = 0
-----
If x = 11, y = 7
If x = 7, y = 11
Step-by-step explanation:
hope it helps you