Standard form and the like terms of a trinomial — task. Mathematics CBSE, Class 7.

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Choose the correct answer.

The standard form of the polynomial

$mn - 2 m^{2} + 3 n \cdot (- 4 m) - 4 m^{2}$

is:

$- 6 m^{2} - 11 mn$
$- 6 m^{2} + 13 mn$
$6 m^{2} + 13 mn$
$6 m^{2} - 11 mn$

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