3 (the power of 2x minus the power of Y) - 2 (the power of 3Y minus the power of 2x) is equal to? (the second power of a + the second power of 2Ab + the second power of B) - (the second power of a - the second power of 2Ab + the second power of B) is equal to? First simplify and then evaluate 1 / 2x-2 (the second power of X-1 / 3Y) + (- 3 / 2x + the second power of 1 / 3Y), where x = 2 / 3, y is equal to - 2, given that a = the second power of X - 5x, B is equal to the second power of X - 11x + 6, calculate the value of a-2b to the second power of 2x y (only x is the second power), - 2x y (only y is the second power), 3x y (only x is the second power), -XY, find out two similar terms from the four formulas, and merge the two similar terms,

3 (the power of 2x minus the power of Y) - 2 (the power of 3Y minus the power of 2x) is equal to? (the second power of a + the second power of 2Ab + the second power of B) - (the second power of a - the second power of 2Ab + the second power of B) is equal to? First simplify and then evaluate 1 / 2x-2 (the second power of X-1 / 3Y) + (- 3 / 2x + the second power of 1 / 3Y), where x = 2 / 3, y is equal to - 2, given that a = the second power of X - 5x, B is equal to the second power of X - 11x + 6, calculate the value of a-2b to the second power of 2x y (only x is the second power), - 2x y (only y is the second power), 3x y (only x is the second power), -XY, find out two similar terms from the four formulas, and merge the two similar terms,

3(2x2-y2)-2(3y2-2x2)=6x2-3y2-6y2+4x2=10x2-9y2