Question

the coordinate axis are rotated through an angle 22° about the origin.if the equation is 4x²+12xy+9y²+6x+9y+2=0 changes to ax²+2bxy+by²+2gx+2fy+c=0 then the value of g²-ac/a²+b²​

Answer 1

Answer:

Sorry I didn't know.

Step-by-step explanation:

Sorry I didn't understand your question

Answer 2

Answer:1/97

Step-by-step explanation: In question there is given b 2 times that is not correct so for my concern to replace other b i take h in replace of that

given eqn - $4x^{2} +12xy+9y^{2} +6x+9y+2$ compare this eqn with $ax^{2} +2hxy+by^{2}+2gx+2fy+c=0$

now a=4 , h=6, b=9, g=3, f=2.5, c=2

put it in the eqn -

$g^{2}-ac/a^{2} +b^{2}$ = 9-(4*2)/(16+81) =1/97