Respuesta :

its c hope this helps !!!!!!

Answer:

D

Step-by-step explanation:

We have to find which equation is correct in give options

A.[tex]5\times 3(6\times 4)=30\times 7[/tex]

[tex]5\times 3(6\times 4)=5\times 6\times 3\times 4=30\times 12[/tex]

Hence, option A is wrong.

B.[tex]4c^4(3c^2)=12c^8[/tex]

[tex]4c^4(3c^2)=12c^{4+2)=12c^6[/tex]

When base same in multiplication then the power will be added.

Hence, option B is false.

C.[tex]3b^3(-2b^4)=-6b^{12}[/tex]

[tex]3b^3(-2b^4)=-6b^{3+4}=-6b^7[/tex]

Hence, option C is false.

D.[tex]5y^4(2y^5)=10y^9[/tex]

[tex]5y^4(2y^5)=10y^{4+5}=10y^9[/tex]

Hence, option D is  correct.

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