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$${x^7} + 5{x^3} + 3x + 1 = 0$$ is equal to ____________.","ans",[415],1,"2022 - 28th June Morning Shift","course","mathematics","exp"," $\"JEE$
\n$f^{\\prime}(x)=7 x^{6}+15 x^{2}+3>0 \\,\\,\\forall\\,\\, x \\in R$\n

\n$f(x)$ is always increasing\n

\nSo clearly it intersects\n

\nx-axis at only one point","opts",[86,423,424,425],"1","3","5",10,"10","initComment","initReply","actionData","errors"]

JEE MAIN - Mathematics (2022 - 28th June Morning Shift - No. 10)

Explanation

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