Question
Thu February 19, 2009 By:

Getting marks in roots???????????

Expert Reply
Fri February 20, 2009

Let his marks in maths are x and in science are 30-x.

As per give equation:

(x+2)(30-x+3)=210

(x+2)(33-x)=210

-x2 +31x+66=210

x2 -31x+144=0

From here,the marks are  x=25.3 and x=5.7

 

 

 

 

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