BPSC 64th Prelims Exam 16 Dec 2018 Solved Paper

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Question : 124 of 150

Marks: +1, -0

If

x=-\;{2}/{3},

then

9 x^{2}-3 x-11

is equal to

-13
13
-5
-17
17

Solution:

From the question

x=\;{-2}/{3}

\;\text " Then, "\; 9 x^{2}-3 x-11

=9 ×(\;{-2}/{3})^{2}-3 ×(\;{-2}/{3})-11

=9 × \;{4}/{9}+3 × \;{2}/{3}-11

=4+2-11=-5

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