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10. Let the score scored by M S Dhoni be x and Yuvraj Singh be y. Then,
x+y=180
9. (y=4-x) Putting this value in second equation we get :
x(4-x) =5
= -x square +4x-5=0
= x square -4x+5=0
= x square +x-5x+5=0
=(x+1)(x-5)
x= -1 or 5
Now y:
y=5 or -1
y cube +x cube= (-1)cube+(5)cube
= (-1)+125
=124
We can also use another value of x and y. In whichever way you get the answer you can find.
Well I'm also not amazing Maths. But I have tried.
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