which of the following expressions are equivalent to polynomial : ((6x^3y^9)x(7xy^2))-((9x^y^2)x(3xy^9))+(8xy^2)^2? Select all that apply

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Ответ:

lilsmitty137ovf7yw

17.03.2020

Mathematics

$\bf -m^2n^2+4m ^4-3n ^4$

Step-by-step explanation:

$\bf -4m^2(n^2-m^2)+3n^2(m^2-n^2)$

Expand.

$\bf -4m^2n^2+4m^4+3n^2m^2-3n ^4$

Collect like terms.

$\bf (-4m ^2n^ 2+3m^2n^ 2)+4m ^4-3n^4$

$\bf -m^2n^2+4m ^4-3n ^4$

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