16(5x+1)=18(9x+1)−13(1−x)
16(5x+1)=18(9x+1)−13(1−x)
|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
x*x+2x+x*x+10x+x*x+25+2x+x*x+1+1+16+x*x+4x*x+9-12x+16x*x+4-1
1x,3x,5x,7x,9x,11x,13x,.则第2013个单项式
先化简,再求值,(3x+2)(3x-2)-5x(x-1)-(2x-1)2,其中x=−13
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
已知函数f(x)=x−1x+2 , x∈[3,5],
化简|1−x|+x
2x−13−10x−16=2x+14−1
(x-1)(x-3)(x-5)(x-7)-9 因式分解
已知f(x−1)=x+2x+2,