If `3(a -2) -2 (a + 9) =1`, then a = ______

If equation of hyperbola is 4(2y -x -3)^(2) -9(2x + y - 1)^(2) = 80 , then

If equation of hyperbola is 4(2y -x -3)^(2) -9(2x + y - 1)^(2) = 80 , then

Find the sum of the following algebraic expressions : 7a^(2) - 5a + 2 , 3a^(2) - 7 , 2a + 9 , 1+ 2a - 5a^(2)

If A=[(2,3),(5,-2)] then 9A^-1 is equal to (A) A\' (B) 2A (C) 1/2 A (D) A

The nth term of the given sequence 3/ (1^ 2) ⋅ 5/ (1^ 2 + 2^ 2) ⋅ 7/ (1^ 2 + 2^ 2 + 3^ 2) ⋅ 9/ (1^ 2 + 2^ 2 + 3^ 2 + 4^ 2)

If 3a+(1)/(3a) = 2sqrt3 , evaluate: 9a^(2) +(1)/( 9a^(2))

65. 3, 1, 2 , 2, : 9, 1, 4, 4 : : 0, 2, 3, 3, : ?

Use the product [(1,-1,2),(0,2,-3),(3,-2,4)][(-2,-0,1),(9,2,-3),(6,1,-2)] to solve the system of equations x - y + 2z = 1 2y - 3z = 1 3x - 2y + 4z = 2