(X十2)²一(X一1)(X十1)怎样计算?
1个回答
x方+4x+4-x方+1
=4x+5
相关问题
1/40X十1/30(X十2)二1怎样计算
计算(1十1/2)x(1一1/2)x(1十1/3)x(1一1/3)x(1十1/4)x(1-1/4)x…x(1十1/12)
怎样计算“x十x÷3十2x一30=180”
(x一1)(x2十x)十(x十1)(x2十x十1)等于多少?
(2x十1)²—(x十3)²—(x一1)²十1
(1)(X一3)(X一2)十18=(X十9)(X十1) (2)(3X十4)(3X一4)<9(X一2
分解因式(x'2十x一6)(x'2十x一8)一24;(x十1)(x一2)(x一3)(x一6)十20;
(1-1/2)x(1十1/2)x(1一1/3)x(1十1/3)x(1一1/4)x(1十1/4)x……X(1一1/99)x
1x1一2x2十3x3一4x4十5x5…十99x99一100x100