因式分解(1)4a2-9(2)2x2-4x+2(3)a3b-ab3(4)a(x-1)-(1-x)
题型:解答题难度:一般来源:不详
因式分解 (1)4a2-9 (2)2x2-4x+2 (3)a3b-ab3 (4)a(x-1)-(1-x) |
答案
(1)4a2-9=(2a+3)(2a-3);
(2)2x2-4x+2, =2(x2-2x+1), =2(x-1)2;
(3)a3b-ab3, =ab(a2-b2), =ab(a+b)(a-b);
(4)a(x-1)-(1-x), =a(x-1)+(x-1), =(x-1)(a+1). |
举一反三
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