1:4x的平方-36
=4(x²-9)
=4(x+3)(x-3)
2:m的3次方(a-2)+m(2-a)
=m³(a-2)+m(2-a)
=m³(a-2)-m(a-2)
=m(a-2)(m²-1)
=m(a-2)(m+1)(m-1)
3:x的4次方-8x的平方y的平方+16y的4次方
=(x²)²-2×4x²y²+(4y²)²
=(x²-4y²)²
=(x+2y)²(x-2y)²
1 (2x+6)(2x-6)
=4(x+3)(x-3)
2 m3(a-2)-m(a-2)
=m(a-2)(m+1)(m-1)
3 原式=(x+2y)平方(x-2y)平方