danemarais9
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Hi there, can someone please help me with my math homework. It’s only the blue highlighted sums I need. Please help I’ll really appreciate it.

Hi there can someone please help me with my math homework Its only the blue highlighted sums I need Please help Ill really appreciate it class=

Respuesta :

jerrelltng

Answer:

(15)

[tex]-mn(2m+7n)[/tex]

(16)

[tex]x^{3}[/tex]

(17)

[tex]9x^{3}[/tex]

(18)

[tex]6x^{5}[/tex]

(19)

[tex]21m^{5} n^{3}[/tex]

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