(x²-y)²-(2y-2)²^4表示4次方9x^4-36y²(a²-2b)²-(1-2b)²

(x²-y)²-(2y-2)²^4表示4次方9x^4-36y²(a²-2b)²-(1-2b)²
(x²-y)²-(2y-2)²
^4表示4次方
9x^4-36y²
(a²-2b)²-(1-2b)²

(x²-y)²-(2y-2)²^4表示4次方9x^4-36y²(a²-2b)²-(1-2b)²
(x?y)?(2y-2)
=(x^2-y+2y-2)(x^2-y-2y+2)
=(x^2+y-2)(x^2-3y+2)
9x^4-36y
=[3x^2-6y)(3x^2+6y)
=9(x^2-2y)(x^2+2y)
(a?2b)?(1-2b)
=(a^2-2b+1-2b)(a^2-2b-1+2b)
=(a^2-4b+1)(a^2-1)
=(a^2-4b+1)(a+1)(a-1)