Question

If 3x +2y=9 and xy=4 3x2 +4y2 find the value of a b​

Answer 1

Answer:

i dont know so sorry

maths may kajor huaa

Answer 2

Answer:

3x+2y=12

Squaring both sides, we get

(3x+2y)

2

=144

⇒9x

2

+4y

2

+2×3x×2y=144

⇒9x

2

+4y

2

=144−12xy

⇒9x

2

+4y

2

=144−12×6 since xy=6

⇒9x

2

+4y

2

=144−72=72

∴9x

2

+4y

2

=72