12. (1,3x + 1,4y⁴)(1,3x − 1,4y⁴)

Question

\((1,3x+1,4y^4)(1,3x-1,4y^4)=(1,3x)^2-(1,4y^4)^2\).

\(=1,69x^2-1,96y^8\).

Ответ: \(1,69x^2-1,96y^8\)

Accepted Answer

\((1,3x+1,4y^4)(1,3x-1,4y^4)=(1,3x)^2-(1,4y^4)^2\).

\(=1,69x^2-1,96y^8\).

Ответ: \(1,69x^2-1,96y^8\)