Question 174210
I will do one only.

(x^2-7x+5)(3x-3)

Just multiply across.

3x times x^2 = 3x^3

3x times -7x = -21x^2

3x times 5 = 15x

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We now do the same thing with -3.

-3 times x^2 = -3x^2

-3 times -7x = 21x

-3 times 5 = -15

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Let's put everything together and simplify.

3x^3 - 21x^2 + 15x - 3x^2 + 21x - 15

3x^3 -24x^2 + 36x - 15...This is your final answer.