a²b²-0.01 x²y-2xy²+y² 16-（2a+3b）² （a²+4）²-16a²

a²b²-0.01 x²y-2xy²+y² 16-（2a+3b）² （a²+4）²-16a²
a²b²-0.01 x²y-2xy²+y² 16-（2a+3b）² （a²+4）²-16a²

a²b²-0.01 x²y-2xy²+y² 16-（2a+3b）² （a²+4）²-16a²
a²b²-0.01
=(ab)²-0.1²
=(ab+0.1)(ab-0.1)
x²y-2xy²+y³
=y(x²-2xy+y²)
=y(x-y)²
16-（2a+3b）²
=4²-（2a+3b）²
=(4+2a+3b)(4-2a-3b)
（a²+4）²-16a²
=（a²+4）²-(4a)²
=(a²+4+4a)(a²+4-4a)
=(a+2)²(a-2)²
愿对你有所帮助!

a²b²-0.01＝（ab+0.1)(ab-0.1)
x²y-2xy²+y² =y(x²－2xy+y)
16-（2a+3b）² =[4+(2a+3b)][4-(2a+3b)]=(4+2a+3b)(4-2a-3b)
（a²+4）²-16a²=(a²＋4+4a)(a²＋4-4a）＝（a+2)²（a－2)²