Question

(8z²+5)-(4z²+2)
(7y³ +9y)-(2y³ +4y)
por fa ayuda

Answer 1

Respuesta:

$4z^2+3$ , $5y^3+5y$

Explicación paso a paso:

$\left(8z^2+5\right)-\left(4z^2+2\right)\\\\8z^2+5-\left(4z^2+2\right)\\\\8z^2+5-4z^2-2\\\\8z^2-4z^2+5-2\\\\8z^2-4z^2+3\\\\4z^2+3$

$\left(7y^3+9y\right)-\left(2y^3+4y\right)\\\\7y^3+9y-\left(2y^3+4y\right)\\\\7y^3+9y-2y^3-4y\\\\7y^3-2y^3+9y-4y\\\\5y^3+9y-4y\\\\5y^3+5y$