Question

Combine like terms -1 + 4x3 - 6 + 7y2 +5 +6x3 - 4x3

Answer 1

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

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