Solve: $( 3 x^{2}-4 x-2)$ when $( x=-4)$.

Given: Expression $( 3 x^{2}-4 x-2)$

To do: To find the value of given expression when $x=4$.

Solution: 

Given expression is $3 x^{2}-4 x-2$

when $x=4$, on substituting this value in the expression it becomes,

$=3( 4)^{2}-4( 4)-2$

$=3\times4\times4-4\times4-2$

$=48-16-2$

$=30$

Thus, the value of the expression is $30$, when $x=4$.

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Updated on: 10-Oct-2022

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