配方专项练习1.x2+2 x+42.x2+4 x+73.x2−2x−34.x2−4 x−55.x2+6 x−46.x2−8 x+77.x2+10 x−38.x2+8 x+49.x2−6 x+710. x2−10x+1411. x2+9 x−412. x2−7 x−213. x2+5 x+914. x2−x+215. x2+3 x−716. x2−3x+417. x2−5x+118. x2−9 x+219. x2+7 x−220. x2+x+421. 2 x2+4 x−422. 2 x2−8 x+423. 3 x2+6 x−424. 3 x2−6 x−1025. 4 x2+4 x+526. 2 x2+x+427. 3 x2+2 x−228. 2 x2−3 x−529. 4 x2−2 x+430. 2 x2−5 x−131. −x2+2 x+432. −x2+4 x+433. −2 x2+2 x+334. −2 x2+6 x−535. −2 x2+x+136. −3 x2+x+137. −3 x2−2 x−138. −3 x2−4 x+439. −2 x2+8 x+440. −3 x2+9 x−5基础十字相乘因式分解1.x2−4 x+32.x2−3x+23.x2+5 x+44.x2+7 x+65.x2−5x+66.x2−9 x+87.x2−6 x+88.x2−8 x+129.x2+7 x+1210. −x2+3 x−211. −x2+9 x−1812. x2+3 x−1813. x2+7 x−1814. x2+6 x−16
