The value of the polynomial $7 x^{4} + 6 x^{2} + x$ when $x = - 2$ is

131

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132

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134

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136

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Solution

The correct option is A $134$
given, $f (x) = 7 x^{4} + 6 x^{2} + x$

$f (- 2) = 7 (- 2)^{4} + 6 (- 2)^{2} + (- 2)$

$f (- 2) = 7 (16) + 6 (4) - 2$

$f (- 2) = 112 + 22 = 134$

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