早教吧作业答案频道 -->其他-->
计算与化简:(1)化简18−(π−1)0−412+12(2−1);(2)计算:(x-8y)(x-y).
题目详情
计算与化简:
(1)化简
−(π−1)0−4
+
(
−1);
(2)计算:(x-8y)(x-y).
(1)化简
18 |
|
1 |
2 |
2 |
(2)计算:(x-8y)(x-y).
▼优质解答
答案和解析
(1)原式=3
-1-2
+
-
=
-
;
(2)(x-8y)(x-y)
=x2-xy-8xy+8y2
=x2-9xy+8y2.
2 |
2 |
| ||
2 |
1 |
2 |
=
3
| ||
2 |
3 |
2 |
(2)(x-8y)(x-y)
=x2-xy-8xy+8y2
=x2-9xy+8y2.
看了计算与化简:(1)化简18−(...的网友还看了以下:
已知函数f(x)=1+x-(x^2)/2+(x^3)/3-(x^4)/4+……+(x^2011)/ 2020-04-27 …
(-1)*(-6)-(-7)*(+6)(3/4)*(1/2-4+2又2/3)-3-(-1)*(-1 2020-05-17 …
(1)x+x/2=3,解得x=2;(2)x/2+x/3=5,解得x=6;(3)x/3+x/4=7, 2020-06-07 …
一元一次方程解答,一小时内,1.7(2x-1)-3(4x-1)=4(3x+2)-1;2.(5y+1 2020-07-19 …
已知多项式3x^3+ax^2+bx+1能被x^2+1且商式是3x+1,求(-a)^b的值急,还有一 2020-07-30 …
1题f(x)=(x-1)*(x-2)^2*(x-3)^3*(x-4)^4求f‘(1)?2题设函数f 2020-07-30 …
因式分解(1)4x^2+4x-1(2)8x^6-27x^3y^6(3)5a-8a^2+42(4)3x 2020-10-31 …
1.已知x=7/2(√7+√5).y=1/2(√7-√5)求下列各式值.(1)x^2-xy+y^2( 2020-11-01 …
1.下列函数中哪个与函数y=x是同一个函数(1)y=(根号x)^2(2)y=x^2/x(3)y=3根 2020-11-01 …
1.当k取何值时,100x^2-kxy+49y^2是一个完全平方数?2.2^48-1可以被60和70 2020-11-03 …