Question

人教版八年级数学上册170页的1.2.3题以及175页1,

Answer 1

1 .(1)5a^2(3a+2) (2)3bc(4a-c) (3)2(p+q)(3p-2q) (4)(a-3)(m-2) 2 .(1)(1+6b)(1-6b) (2)3(2x+y)(2x-y) (3)(0.7p+12)(0.7p-12) (4)43(x+y)(x-y) 3 .(1)(1+5t)^2 (2)(m-7)^2 (3)(y+0.5)^2 (4)(m-n)^2 (5)(5a-8)^2