Question

Multiply 4(x^3 - 2x + 4) (Points : 1)

4x3 - 2x + 4
4x3 - 8x + 16
4x3 + 2x + 8

Answer 1

for the solution of this problem, we shall recall the distributive property, since it's a postulate, it does not have a proof and I can easily write it for you:
\[a(b+c)=ab+ac\]
What it states, is that if a real number or a variable is multiplying another sum of variables or constants, we can transform it into a sum if we multiply all the terms by the multiplying number or variable.
so having:
\[4(x ^{3}+2x+4)= 4x ^{3}+8x +16\]

Answer 2

oh, sorry, did not see the "-" sign.
the result is:
\[4x ^{3}-8x+16\]

Answer 3

Oh! Ok thanks so much I totally understand that.