换元法 (x+1)(x+3)(x+5)(x+7)+15
来源:学生作业帮 编辑:搜搜考试网作业帮 分类:综合作业 时间:2024/06/15 01:38:41
换元法 (x+1)(x+3)(x+5)(x+7)+15
因式分解 (a-1)(a-2)(a-3)(a-4)-24
一道也可以!!!
因式分解 (a-1)(a-2)(a-3)(a-4)-24
一道也可以!!!
(x+1)(x+3)(x+5)(x+7)+15
=(x+1)(x+7)(x+3)(x+5)+15
=(x²+8x+7)(x²+8x+15)+15
=(x²+8x)²+22(x²+8x)+15×7+15
=(x²+8x)²+22(x²+8x)+120
=(x²+8x+12)(x²+8x+10)
=(x+2)(x+6)((x²+8x+16)-6)
=(x+2)(x+6)(x+4+√6)(x+4-√6);
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,
=(x+1)(x+7)(x+3)(x+5)+15
=(x²+8x+7)(x²+8x+15)+15
=(x²+8x)²+22(x²+8x)+15×7+15
=(x²+8x)²+22(x²+8x)+120
=(x²+8x+12)(x²+8x+10)
=(x+2)(x+6)((x²+8x+16)-6)
=(x+2)(x+6)(x+4+√6)(x+4-√6);
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,
换元法 (x+1)(x+3)(x+5)(x+7)+15
因式分解 (x+1)(x+3)(x+5)(x+7)+15
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
已知3x*x-x=1,求6x*x*x+7x*x-5x+2000
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x
(x+1)(x+2)(x+5)(x+7)+15 因式分解
因式分解 (x+1)(x+2)(x+5)(x+7)+15
(x-1)(x-3)(x-5)(x-7)-9 因式分解
(2x-1)/(x-1)(x-2)=(x-5)/(x-2)(x-3) x/2x^2-11x-21=(x+7)/x^2-1
已知1+x+x^2+x^3=0,求x+x^2+x^3+x^4+x^5+x^6+x^7+x^8的值