Quadratic of (x-y) = quadratic of x+quadratic of y -2xy= 19-2*3= 13.
65438' s 2 x+2y power +00 = 65438' s x power +00 times (65438' s y power +00) =2*3' s square =2*9= 18.
The third power of 4 times the eighth power of y = the second power of 2 times the third power of 2 = (2x+3y) the second power of 2 = the fifth power of 2 =32.
Square of 4 (a +b) = square of a+square of b +2ab=7.
The square of (a-b) = the square of a+the square of b-2ab =3.
The square of a+the square of b =5.
ab= 1
The fourth power of A+the fourth power of B = the square of (the square of A+the square of B)-the square of 2A times the square of B = the square of 5 -2=23.