14.3 因式分解100题（计算题）专项练习 2023-2024学年人教版八年级数学上册

因式分解（计算题）专项练习（一） (1)1+10t+252 (5)25a2.80a+64 (2）m2-14m+49 (6)a2+2a(b+c)+(b+c)2 3)+y+号 (7)ax+ay (4)(m+n)2.4m(m+n)+4m (8)3mx-6my 2 9I·r-r8(9I) I+ez+ze (ZI) “气+忆+：h(sT) 6-zXt (II) I+(E-2X)Z-z (E-zx)(I) (X-)9E-(M-X)eZ(0I) (e-z)+(Z-e)aw (EI) (9+z)b-(z9+z)d(6) (17)2m(a-b)-6n(b-a) (21)6m2n-15mn2+30m3n (18)81-18(a+4)+(a+4) (22)(a+b)-(a+b)2 (19)4x2-4xy+8xz (23)x(x-y)+y(y-x) (20)6x4-4x3+2x2 (24)(m+n)2-2(m+n) 3 (9+z)-(9z,e9+Dz）(SZ) 参考答案 (1)(1+5)2 (2)(m.7)2 o草8 (4)(n-m)月 (5)(5a-8)2 (6)(a+6+c月 (7)a(x+y) (8)3m(x-2y) (9)(a2+b2)(p-q) (10)(x-y)(2a+3b) (11)(2x+3)(2x-3) (12)(a+1)2 (13)(a-2)(m+1)(m-1) (14)(x+2)2(x-2)2 (15) (16)-(x.4y)月 (17)2(a-b)(m+3n) (18)(5.a) (19)4x(x-y+2z) (20)2x2(3x2-2x+1) (21)3mn(2m-5n+10m2) (22)(a+b)(1-a-b) (23)(x-)2 (24)(m+n)(m+n-2) (25)-(2a+bj(a+2b因式分解（计算题）专项练习（三） (1)a2-2a (5)mm-5+2m-5 (2)3ab2+a2b (6)x-3+x3-x (3)3x2-9y (7)5x2+10x+5 (4)x2-6x+9 (8)a+2j(a-2)+3a+2 t-,(+x)(9I) xst-x (I) 1+(x-)9-(d-x)6(S1) (D+I-x-(1-D)b(I1) xE+x9-E (I) D8I-09I+-(01) (D-q)b+(9-D):D(EI) 9p71+:98(6) (0-q)zI-,(9-D)08 (v) 2x9-(29+x)(0Z) (u-0)E-(+u)(u-w)6(EZ) E(D-9)Z1+z(9-D)98I(61) I8+L-9l(乙Z) (D-9)g-(9-p)E(8I) 91+(S-u)8+x(S-zu)(Iz) e-9+E-(LI) I8+(9-:)8I+(x9-(S7) 参考答案 (1)a(a-2) (2)ab(3b+a) (3)3.xx-3y (4)(x-3 (5)(m-5)(m+2】 (6)(x-3(6-xj (7)5(x+1 (8)(a+2(a+1 (9)4ab2(2a2+3bc】 (10)-2a(2a2-8a+9 (11)4-xj(a-1 (12)(x-5)(x+5)x (13)(a+2)(a-2)(a-b) (14)31-x (15)(3x-3y+1)2 (16)(x-y (17)-3xy2(x-y2 (18)3(a-b)(x+2y) (19)6(a-b)2(5b-2a) (20)(x-4y)(x+4y)月 (21)(m+1)2(m-1) (22)(2x+3y)2(2x-3y) (23).6(m-m)川m+2m） (24)4b-a(5a-3b) (25)(x-3)因式分解（计算题）专项练习（二） (1)15y+10x2.5x (5)x2.y2.2xz+z2 (2)x.22.x+2 (6)4ab-a2.4b2+9 (3)x2.3y2x-3y (7)3x2.6xy+3y2.27m2 (4)(a-b2.6a+6b+9 (8)2b3.b2.6b+5a-10ab+3 又 2 qS7+qD0I-9:”(9T) 9t+:929·9D(ZI) -x6-9(SI) 9-xs-xt (II) psi-p (I) xt-x91+x-(OI) 9t+9:DS-9,”(EI) r87x01x7(6) (17)4a2(a-b)-(a-bj (21)a2.b2.x2+y2.2ay+2bx (18)25x2.16y (22)(2.3x)2.2x2-3x)-8 (19)(a-b(x-y)-(b-a(x+y) (23)(x2-x-3)x2.x-5)-3 (20）6xy2.9x2y-y (24)a2(x-2a2-a2a-x 3 '7·q)s7+,g·z9sI(SZ) 参考答案 (1)5x(3y+2x-1 (2)（x-2jx-3 (3)(x-3y2