a<c<0小于b “//”绝对值 (1)化简:/a-b/+/a+c/-/b-c/+/2c/; (2)当a=-3,c=-2,求上式的值a<c<0小于b“//”绝对值(1)化简:/a-b/+/a+c/-/b-c/+/2c/;(2)当a=-3,c=-2,求上式的值
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![a<c<0小于b “//”绝对值 (1)化简:/a-b/+/a+c/-/b-c/+/2c/; (2)当a=-3,c=-2,求上式的值a<c<0小于b“//”绝对值(1)化简:/a-b/+/a+c/-/b-c/+/2c/;(2)当a=-3,c=-2,求上式的值](/uploads/image/z/3992019-51-9.jpg?t=a%EF%BC%9Cc%EF%BC%9C0%E5%B0%8F%E4%BA%8Eb+%E2%80%9C%2F%2F%E2%80%9D%E7%BB%9D%E5%AF%B9%E5%80%BC+%EF%BC%881%EF%BC%89%E5%8C%96%E7%AE%80%EF%BC%9A%2Fa-b%2F%2B%2Fa%2Bc%2F-%2Fb-c%2F%2B%2F2c%2F%EF%BC%9B+%EF%BC%882%EF%BC%89%E5%BD%93a%3D-3%2Cc%3D-2%2C%E6%B1%82%E4%B8%8A%E5%BC%8F%E7%9A%84%E5%80%BCa%EF%BC%9Cc%EF%BC%9C0%E5%B0%8F%E4%BA%8Eb%E2%80%9C%2F%2F%E2%80%9D%E7%BB%9D%E5%AF%B9%E5%80%BC%EF%BC%881%EF%BC%89%E5%8C%96%E7%AE%80%EF%BC%9A%2Fa-b%2F%2B%2Fa%2Bc%2F-%2Fb-c%2F%2B%2F2c%2F%EF%BC%9B%EF%BC%882%EF%BC%89%E5%BD%93a%3D-3%2Cc%3D-2%2C%E6%B1%82%E4%B8%8A%E5%BC%8F%E7%9A%84%E5%80%BC)
a<c<0小于b “//”绝对值 (1)化简:/a-b/+/a+c/-/b-c/+/2c/; (2)当a=-3,c=-2,求上式的值a<c<0小于b“//”绝对值(1)化简:/a-b/+/a+c/-/b-c/+/2c/;(2)当a=-3,c=-2,求上式的值
a<c<0小于b “//”绝对值 (1)化简:/a-b/+/a+c/-/b-c/+/2c/; (2)当a=-3,c=-2,求上式的值
a<c<0小于b
“//”绝对值
(1)化简:/a-b/+/a+c/-/b-c/+/2c/;
(2)当a=-3,c=-2,求上式的值
a<c<0小于b “//”绝对值 (1)化简:/a-b/+/a+c/-/b-c/+/2c/; (2)当a=-3,c=-2,求上式的值a<c<0小于b“//”绝对值(1)化简:/a-b/+/a+c/-/b-c/+/2c/;(2)当a=-3,c=-2,求上式的值
a-b
原式=b-a-(a+c)-b+c-2c=-2(a+c)
(2)=-2(-3-2)=10
a
=b-a-(a+c)-(b-c)-2c
=-2a-2c
当a=-3,c=-2
-2a-2c=10
1.原式=(-a+b)+(-a-c)-(b-c)+(-2c)= -2(a+c)
2.代入可得= -2(-3-2)=10
(1)原式=b-a-(a+c)-(b-c)-2c
=b-a-a-c-b+c-2c
=-2a-2c
把a=-3,c=-2代入-2a-2c中得:-2a-2c=6+4=10
所以原式的值为10。
(1)原式=b-a=(-a)=(-c)-(b-c)=(-2c)
=b-a-a-c-b=c-2c
=-2a-2c
(2)原式(-2a-2c)=(-3)*2-(-2)*2
=6+4
=10
我刚刚才做完的。记得下次遇到这种题要找...
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(1)原式=b-a=(-a)=(-c)-(b-c)=(-2c)
=b-a-a-c-b=c-2c
=-2a-2c
(2)原式(-2a-2c)=(-3)*2-(-2)*2
=6+4
=10
我刚刚才做完的。记得下次遇到这种题要找个数字来试试,要保证带绝对值和去掉绝对值的结果一样 然后该消掉的消掉就可以了 其实很简单的。。
收起
/a-b/+/a+c/-/b-c/+/2c/
=b-a-a-c-(b-c)-2c
=-2a-2c
-2a-2c=6+4=10