14.1整式乘法～14.3因式分解 综合练习 2024--2025学年人教版八年级数学上册

单项式乘多项式(1) (1) (2) -x(2x+3x2-2); (2xy2-3xy)·2xy; (3) -2ab(ab-3ab2-1) (4) (5) (34an+ 1-b2)· ab. -10mn· (②mn-3mn^②} (6) (-4ax)2·(5a2-3ax②} (-3x3y②)2 (8)7a(②ab2-3b). (7) (3x②y-2xy②)· (9)x (2-1)+2x2(+1)-3x(②-5). 11.(2)-(ry4xy241). 10. 2ab(5ab+3a2b) 12. 计算;2x(x2-x+3) 13. (-4a3+12a2b-7a3b3) (-4a) 14.计算:xv2(3x2y-xy2+y) $5. (-2ab) (3a2-2ab-4b2) 单项式乘多项式(②) 1. (-3xr) (-x+2x-l)= 3. 2(}b}-ab+1)+3ab(1-ab)= 4.(-3x)(x}-2x-3)+3x(-2x-5)= 5. 8m(m}-3m+4)-m2(m-3)= 6. 7x(2-1)-3x(4x-1)-2$x(x+3)+= 7. (-2a*b)(ab?}-a2b+a)= 8. (-x)}(-2x2)+2r^”(x-1)= 多项式与多项式相乘(1) 1、 (x+2)(x+6) 2、(x+5)(x+6) 3、(x+5)(x-7) 4、(x+2)(x-3) 5、 (-x-2)($x-6) 6、(-x-5y)(x-7y) 7、(x-3y)(x+7y) 8、(2x-y)(3x+2y) 9、(3x-1)(2x+1) 10、(2x-3)(3x-4) 11、(3x+2y)(3x-4y) 12、(-8x+5)(5x-4) 13、(-4x-)(-5x+2y 14、(-2a-3b)(4a-2b 14、(2x-3y)(4x2+6xy+9y②} 16、(a+2)(a4-2a+4) 17、(3x②+2x+1)(2x②+3x-1) 18、(-1)(-2)(-3 18、 (a-4)(a+3)-(2a+1)(a-3) 20、(x+2)(x-3)-x(x-2) 21.(x-3)(-6x+1 -$tx-$t-3) 22.(a-2b)+(a-b)(a+b)-2(a-3b)(a-b 多项式与多项式相乘(2) (1)(2x+3y)(3x-2y (2)(③x-1)(4x+5) (3)(x+3)(x+4)-(-1)(x-2 (4) (3x+2)(2x+3)-x-3y)(3x+4y (5) (x+2)(x+3)-(x+6)(x-1 (6)(m+1)(2m-1 (7) (2a-3b)(3a+2b) (8) (2x-3y)(4x2+6xy+9 (9)(-12ab)(23ab2-2ab+43b+1) (10) 3ab(arb-ab?-ab)-ab(2a-3ab+2a (11)12(2x-y)(x+y (12)ala-3)+(2-a)(2+a 整式除法 (1) (-a)8-(-a); ②)(x-y)7-(y-x)6 (③)(-m4)3-(-m)7; (4)x7-(x5-x). ()(-25ab4)-(-14ab②)-(-10ab) (6) -32a4b5c-(-2ab)·(-34ac) (7) (23n3-7mn②+23n}-23n} (8) (12x46-8x24-16x3)- 4x2y3.