1 Answer

Icespace · Answer 1 · 2020-08-17T13:05:58+0000

$\huge{\boxed{14x^3 + 7y^2 - 2}}$

The like terms can be grouped by their variables and exponents. Let's do that.

$x^3:\ \ \ 4x^3 + 6x^3 - 4x^3$

$y^2:\ \ \ 7y^2$

$1^1:\ \ \ \ -1 - 6 + 5$

Now, just add each group of like terms together by adding their coefficients.

$x^3:\ \ \ 4x^3 + 6x^3 - 4x^3\ \ \ \bf{=14x^3}$

$y^2:\ \ \ 7y^2\ \ \ \bf{=7y^2}$

$1^1:\ \ \ \ -1 - 6 + 5\ \ \ \bf{=-2}$

Now, add all the terms together.
$\boxed{14x^3 + 7y^2 - 2}$

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