(1)求22x+3y;
(2)求26x﹣9y .
(1)求:22m+3n的值;
(2)求:24m﹣6n的值.
①(a2)3•(﹣a3)2•(﹣a2)3
②(y2)3+(y3)2﹣y•y5
③(﹣a2)3+(﹣a3)2﹣a2a4
④[(a+b)2]3•[(a+b)2]4
⑤﹣a6•a5•a+5(a3)4﹣3(a3)3•a2•a.