Respuesta :

mlarsen5000

Answer:

14y³

Step-by-step explanation:

On the left side, the x^7’s cancel out.  On the right, the x’s and z² cancel out.  The y^5 becomes y^3.  That leaves you with

7y^3-56/-8y^3, which equals

7y^3+7y^3=

14y³

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