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Question : 126 of 200
Marks:
+1,
-0
Solution:
(2)
I.30x2+11x+1=0⇒30x2+6x+5x+1=0⇒6x(5x+1)+1(5x+1)=0⇒(6x+1)(5x+1)=0⇒ x = -
or -
II.42y2+13y+1=0⇒42y2+7y+6y+1=0⇒7y(6y+1)+1(6y+1)=0⇒(7y+1)(6y+1)=0⇒y=−or -
Clearly, x < y
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