1.

3x+2y=12 and xy=6find value of 9xsquare+4y square

Answer»

Answer:

72

Step-by-step explanation:

Solve this USING (a+b)^2=a^2+b^2+2ab

Let a be 3X

Let b be 2y

(3x+2y)^2=(3x) ^2+(2y) ^2+2*3x*2y

12^2=9x^2+4y^2+12*6

144=9x^2+4y^2+72

9x^2+4y^2=144-72

=72=Answer


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