plz help me to answer the question,if you do not know the answer,plz answer no~i need the step~Thank for your help~
Simplify the following expression:
(1)[t/9(u-t)^2]-[u/4(t-u)]
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1ai)Expand 1/x into an algebraic fraction with denominator x(x+8).
aii)Expand 1/x+8 into an algebraic fraction with denominator x(x+8)
2)Using the result of (a),simplify (1/x)-(1/x+8).
f.2 mathz plz help
2007-10-07 7:51 pm
回答 (1)
2007-10-12 2:29 am
✔ 最佳答案
(1)[t/9(u-t)^2]-[u/4(t-u)]
=[t/9(u^2-t^2)]-[u/4(t-u)]
=2u^2-2t^2/9-ut-u^2/4
=8u^2-4t^2-9tu-9u^2
=-u^2-4t^2-9tu
1ai)
1/x 乘 x(x+8)
=1/x 乘 x^2+8x
=x^2/x+8x
aii)
1/x+8 乘 x(x+8)
=1/x+8 乘 x^2+8x
=x^2/x+8x/x+8x^2+64x
=x+8+8x^2+64x
=65x+8+8x^2
2) Using the result of (a),...姐係ai)定aii) ??
參考: D answer 唔知對唔對...me
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