计算:(3x+1)^2 (3x-1)^2-(2x+1)(-2x+1)
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 03:55:21
计算:(3x+1)^2(3x-1)^2-(2x+1)(-2x+1)计算:(3x+1)^2(3x-1)^2-(2x+1)(-2x+1)计算:(3x+1)^2(3x-1)^2-(2x+1)(-2x+1)原
计算:(3x+1)^2 (3x-1)^2-(2x+1)(-2x+1)
计算:(3x+1)^2 (3x-1)^2-(2x+1)(-2x+1)
计算:(3x+1)^2 (3x-1)^2-(2x+1)(-2x+1)
原式=(3x+1)^2 (3x-1)^2+(2x+1)(2x-1)
=(3x+1)^2 (3x-1)^2+4x^2-1
=(9x^2+1+6x)(9x^2+1-6x)+4x^2-1
=81x^4-54x^3+9x^2+9x^2-6x+1+54x^3-36x^2+6x+4x^2-1
=81x^4-14x^2
(3x+1)^2 (3x-1)^2-(2x+1)(-2x+1)
=(9x^2-1)^2-(1-4x^2)
=81x^4-18x^2+1-1+4x^2
=81x^4-14x^2
=x^2(81x^2-14)
注意符号
={(3x)^2 - 1} + {(2x)^2 - 1}
=9x^2 -1 + 4x^2 -1
=13x^2 -2
0.15
计算(x+1)(x+2)(x+3)(x+4)
计算:(x+1)(x-2)(x-3)(x-6)
计算 x(x+3)-(x-1)(x-2)
如何计算 (x+1)(x+2)(x+3)(x+4)
计算(X-1)(X-2)(X-3)(X-4)
(x-1)(x-2)(x-3)(x-4)-24计算
计算:x/(x-1)-(x+3)/(x^-1)*(x^2+2x+1)/(x+3)
计算:[(x^2 - 4)/(x^2 - x - 6) + (x+2)/(x-3)] / (x+1)/(x-3)
计算:1-2x+x^2/x-x^3*xy+x^2y/x-x^2
计算3/x-2+2/1-x
(x-1)(2x-3)计算过程
计算(-2x+1)(-3x+5)
计算:(3x+1)(x+2)
2x/x-1+1/x+3-3x+5/x^2+2x-3计算,
计算3x^3-(x^2 +2x)(3x-1)-3(x+5)(x-2)
计算 2+x+3/x-1*x^2-2x+1/x^2+6x+9
计算:(2x+3)(3x-4)>(x+1)(x-1)+5x(x+3)+7
计算,X(3x-2)(x+1)-2x(x-2)(x+2)