因式分解：十字/交叉相乘法：補充練習一因式分解下列多項式1.x23x22.x26x53.x212x114.x218x175.x220x196.x224x237.x230x298.x232x319.x238x3710.x242x4111.x244x4312.x248x47因式分解：十字/交叉相乘法：補充練習二因式分解下列多項式1a.x24x31b.x24x31c.x22x31d.x22x32a.x28x72b.x26x72c.x26x72d.x28x73a.x214x133b.x212x133c.x214x133d.x212x13因式分解：十字/交叉相乘法：補充練習三因式分解下列多項式1a.x27x61b.x27x61c.x25x61d.x25x61e.x25x61f.x25x61g.x2x61h.x2x62a.x216x152b.x216x152c.x214x152d.x214x152e.x22x152f.x22x152g.x28x152h.x28x153a.x223x223b.x223x223c.x29x223d.x29x223e.x213x223f.x213x223g.x221x223h.x221x22因式分解：十字/交叉相乘法：補充練習四因式分解下列多項式1.x22x12.x22x13.x24x44.x24x45.x210x256.x210x257.x214x498.x214x499.x222x12110.x222x12111.x226x16912.x226x169因式分解：十字/交叉相乘法：補充練習五因式分解下列多項式1a.x213x121b.x213x121c.x211x121d.x211x121e.x28x121f.x28x121g.x24x121h.x24x121i.x27x121j.x27x121k.x2x121l.x2x122a.x211x182b.x211x182c.x27x182d.x27x182e.x219x182f.x219x182g.x217x182h.x217x182i.x29x182j.x29x182k.x23x182l.x23x183a.x212x203b.x212x203c.x2x203d.x2x203e.x29x203f.x29x203g.x28x203h.x28x203i.x221x203j.x221x203k.x219x203l.x219x20因式分解：十字/交叉相乘法：補充練習六因式分解下列多項式1.2x23x12.5x26x13.11x212x14.17x218x15.19x220x16.23x224x17.29x230x18.31x232x19.37x238x110.41x242x111.43x244x112.47x248x1因式分解：十字/交叉相乘法：補充練習七因式分解下列多項式1a.12x213x11b.12x213x11c.12x211x11d.12x211x11e.12x28x11f.12x28x11g.12x24x11h.12x24x11i.12x27x11j.12x27x11k.12x2x11l.12x2x1因式分解：十字/交叉相乘法：補充練習八因式分解下列多項式1a.2x213x151b.2x213x151c.2x27x151d.2x27x151e.2x211x151f.2x213x151g.2x2x151h.2x2x15