**Question:**Please help with these questions.

You don't give any exponent power for the x terms though.

If you want help, you should at least write the question correctly, don't you think??

(4^3-x^+2x)+(3^3+x^+4x)

4^3 = 4*4*4 = 64

(64 - x^? + 2x) + (3*3*3 +x^? +4x)

(64 - x^? + 2x) + (27 +x^? +4x)

64 +27 +2x +4x -x^? +x^?

93 + 6x + x^? -x^?

Assuming that the exponents were the same, we get 93 + 6x

===========

(3m + 4)(m^? - 3m +5)

Again, no exponent for the m^?

-9m^2 + 15m +4m^? -12m +20 + 3m^(?+1)

-9m^2 + 3m +20 +4m^? + 3m^(?+1)

I can't help you any more than that, without knowing what the actual question was.

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