(1)a²-1/25b² (2)9a²-4b² (3)x²y-4y (4)-a^4+16 (5)15a^3+10a^2
(1)a²-1/25b² (2)9a²-4b² (3)x²y-4y (4)-a^4+16 (5)15a^3+10a^2
(6)12abc-3bc^2 (7)6p(p+q)-4q(p+q) (8)m(a-3)+2(3-a) (9)1-36b^2
(10)12x^2-3y^2 (11)0.49^2-144 (12)(2x+y)^2-(x+2y)^2
(6)12abc-3bc^2 (7)6p(p+q)-4q(p+q) (8)m(a-3)+2(3-a) (9)1-36b^2
(10)12x^2-3y^2 (11)0.49^2-144 (12)(2x+y)^2-(x+2y)^2
数学人气:764 ℃时间:2019-10-23 05:36:59
优质解答
(1)a²-1/25b² =(a+b/5)(a-b/5)(2)9a²-4b² =(3a+2b)(3a-2b)(3)x²y-4y =y(x²-4)=y(x+2)(x-2)(4)-a^4+16 =16-a^4=(4+a²)(4-a²)=(4+a²)(2+a)(2-a) (5)15a^3+10a^2...
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