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Question
secondary 3 | A Maths
One Answer Below
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u dont know how to do
Date Posted: 4 years ago
Views: 184
4x + 2y - 27 = 0
y = 27/2 - 2x
x² + 2xy = 60
x² + 2x(27/2 - 2x)= 60
x² + 27x - 4x²= 60
x² - 9x + 20 = 0
(x-4)(x-5) = 0
x = 4 or 5
y = 5.5 or 3.5
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.
.
y = 27/2 - 2x
x² + 2xy = 60
x² + 2x(27/2 - 2x)= 60
x² + 27x - 4x²= 60
x² - 9x + 20 = 0
(x-4)(x-5) = 0
x = 4 or 5
y = 5.5 or 3.5
.
.
.
See 1 Answer
done
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hope this helps...
Date Posted:
4 years ago
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