State whether the given statement is true or false.
The value of the expression $(2 x)^{2} + 5 x$ for $x = 3$ is 51.

True

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False

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Solution

The correct option is A
True

$(2 x)^{2} + 5 x = 4 (x^{2}) + 5 x$

Substituting $x$ =3 in the above expression gives,
36 + 15 = 51

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