(1) x^n+1-6x^n+9x^n-1怎么算?(2) x^4-13x^2y^2+36y^4 (3) (a^2-6a)^2+14_数学解答

(1) x^n+1-6x^n+9x^n-1怎么算?
(2) x^4-13x^2y^2+36y^4 (3) (a^2-6a)^2+14(a^2-6a)+45用因式分解.T_T

人气：353 ℃　时间：2020-09-26 21:06:29

解答

(1) x^n+1-6x^n+9x^n-1= x^n-6x^n+9x^n+1-1=4x^n(2) x^4-13x^2y^2+36y^4 =(x²-4y²)(x²-9y²)=(x+2)(x-2)(x+3)(x-3)(3) (a^2-6a)^2+14(a^2-6a)+45= (a^2-6a+5)(a^2-6a+9)=(a-1)(a-5)(a-3)²