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Solution


Q.

The zeroes of the polynomial x2–3x–m(m+3) are
1 m,m+3  
2 -m,m+3  
3 m,-(m+3)  
4 -m,-(m+3)  

Ans.

(2)

Let p(x)=x2-3x-m(m+3)

⇒p(x)=x2-(m+3)x+mx-m(m+3)

=x{x-(m+3)}+m{x-(m+3)}

For zeros of p(x)

⇒p(x)=(x+m){x-(m+3)}=0⇒x=-m,m+3

∴ Its zeros are -m,m+3