factorise and simplify (m^2+m−2)/(m^2+2 m)?
回答 (4)
2009-09-23 1:51 pm
✔ 最佳答案
(m+2)(m-1)/m(m+2)=m-1/mhere it is again just in case!
2009-09-23 3:20 pm
(m^2 + m - 2)/(m^2 + 2m)
= (m^2 + 2m - m - 2)/[m(m + 2)]
= [(m^2 + 2m) - (m + 2)]/[m(m + 2)]
= [m(m + 2) - 1(m + 2)]/[m(m + 2)]
= [(m + 2)(m - 1)]/[m(m + 2)]
= (m - 1)/m
= m/m - 1/m
= 1 - 1/m
= (m^2 + 2m - m - 2)/[m(m + 2)]
= [(m^2 + 2m) - (m + 2)]/[m(m + 2)]
= [m(m + 2) - 1(m + 2)]/[m(m + 2)]
= [(m + 2)(m - 1)]/[m(m + 2)]
= (m - 1)/m
= m/m - 1/m
= 1 - 1/m
2009-09-23 2:02 pm
m^2+m-2
--------------
m^2+2m
...(m+2)(m-1)
=---------------- cancel m+2
.....m(m+2)
......m-1
=-------------- answer//
........m
--------------
m^2+2m
...(m+2)(m-1)
=---------------- cancel m+2
.....m(m+2)
......m-1
=-------------- answer//
........m
2009-09-23 1:50 pm
I ALREADY DID IT ONCE ...................DIDN'T YOU UNDERSTAND IT?
收錄日期: 2021-05-01 12:47:52
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