please give me all answer then I will mark us brainlist
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Hey user!
13.
x=1.2727.....
Let it be equation no.1
Multiply by 100
100x=127.2727..
Let it be equation no.2
Equation no.2-equation no.1
100x-x=(127.2727...)-(1.2727...)
99x=126
X=126/99=42/33
14.As we know;x^3+y^3+z^-3xyz=(x+y+z)(x^2+y^2+z^2-xy-yz-zx)
If (x+y+z)=0
x^3+y^3+z^3-3xyz=0*(x^2+y^2+z^2-xy-yz-zy)
=x^3+y^3+z^3-3xyz=0
=>x^3+y^3+z^3=3xyz
Thus proved.
15.i)
If f(x)is divided by g(x) the remainder is f(1/3)
=>f(1/3)=9*(1/3)^3-3*(1/3)^2+14*1/3-3
=9*1/27-3*1/9+14*1/3-3
=1/3-1/3+14/3-3
=1-1+14-9/3
=1+13-9/3
=14-9/3
=5/3
Hope this answer helped you....pls mark as brainliest
Kanitha:
Mark as brainliest plss
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