(2x+1)(3x-2)
来源:百度知道 编辑:UC知道 时间:2024/09/22 18:13:29
(2x+1)(3x-2)
(4a^2+2a+1)(2a-1)
(2x-3y)(2x+3y)
(3x-1/2)(-1/2-3x)(-1/4-9x^2)
(-a-2b)^2
(2a-3b+1)^2
2m^2(-2mn)*(-1/2m^2n^3)
(-4a^2b)*(-2ab)^3*(1/8ab)
-3x(4x^2-1/3x+2)
(-2/3a)(1/2a^2+1/6a-1/4)
(4a^2+2a+1)(2a-1)
(2x-3y)(2x+3y)
(3x-1/2)(-1/2-3x)(-1/4-9x^2)
(-a-2b)^2
(2a-3b+1)^2
2m^2(-2mn)*(-1/2m^2n^3)
(-4a^2b)*(-2ab)^3*(1/8ab)
-3x(4x^2-1/3x+2)
(-2/3a)(1/2a^2+1/6a-1/4)
(2x+1)(3x-2)
=6x^2-4x+3x-2
=6x^2-x-2
(4a^2+2a+1)(2a-1)
=(2a)^3-1
=8a^3-1
(2x-3y)(2x+3y)
=4x^2-9y^2
(3x-1/2)(-1/2-3x)(-1/4-9x^2)
=-(9x^2-1/4)(-1/4-9x^2)
=81x^2-1/16
(-a-2b)^2
=a^2+4ab+4b^2
(2a-3b+1)^2
=4a^2+9b^2+1-12ab+4a-6b
2m^2(-2mn)*(-1/2m^2n^3)
=2m^5n^4
(-4a^2b)*(-2ab)^3*(1/8ab)
=2a^6b^5
-3x(4x^2-1/3x+2)
=-12x^3+x^2-6x
(-2/3a)(1/2a^2+1/6a-1/4)
=(-a/18)(6a^2+2a-3)
123
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(x+1)(x+2)(x+3)(x+4)=(x+1)(x+1)+(x+2)(x+2)+(x+3)(x+3)+(x+4)(x+4)
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(x-2)(x+2)-(x-1)(x-3)
(x-2)(x+2)-(x+1)(x-3)