If 3x +2y = 12 and xy=6, find the value of 9x^2 + 4y^2.
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squaring both sides we get,
9x2+4y2+12xy=144
implies 9x2+4y2=144-72=72
9x2+4y2+12xy=144
implies 9x2+4y2=144-72=72
samrat33:
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Answered by
2
Answer:
Step-by-step explanation:
Given,
3x+2y=12 and xy=6
To find the value of,
9x^2+4y^2
3x+2y=12. -1
(3x+2y)^2=(12)^2. -2
9x^2+4y^2=144
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