Question

I WILL MARK AS BRAINLLIEST
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Answer 1

Answer:

The coefficient of x² is 12.

Step-by-step explanation:

The given expression is  $(x+4)^{3}$

Using the formula:

$(a+b)^{3} =a^{3} +3a^{2} b+3ab^{2}+b^{3}$

We get

$(x+4)^{3} =x^{3} +3(x)^{2} (4)+3(x)(4)^{2} +4^{3}$

$(x+4)^{3} =x^{3} +12x^{2} +24x+64$

Therefore, the coefficient of x² is 12.