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CBSE Class 10 Answered

Getting marks in roots???????????
Asked by | 19 Feb, 2009, 05:13: PM
Expert Answer

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

 

 

 

 

Answered by | 20 Feb, 2009, 01:16: AM
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