if 3x+2y=12 and xy=6, find the value of 9xsq +4ysq
please get me perfect answer
Answers
Answered by
3
Answer:
132 is the write answer
Step-by-step explanation:
(a+b)²=a²+b²+2ab
(3x+2y)²=144
so,
9x²+4x²=(3x+2y)²-2xy
which gives 132
Similar questions