(2x-1)的平方乘(2x+1)的平方-(x+2)的平方乘(x-2)的平方
=(4x²-1)²-(x²-4)²
=(4x²-1+x²-4)(4x²-1-x²+4)
=(5x²-5)(3x²+3)
=15(x²-1)(x²+1)
因式分解到此结束
如要化简:
=15(x的4次方-1)
=15x的4次方-15
=((2x-1)(2x+1)+(x+2)(x-2))*((2x-1)(2x+1)-(x+2)(x-2))
=(4x^2-1+x^2-4)(4x^2-1-x^2+4)
=(5x^2-5)(3x^2+3)
=15(x^2-1)(x^2+1)
=15(x^4-1)=15x^4-15
3x方+3