Therefore, the multiplication of the equation that's given will be D. 3x³ + 18x²
It should be noted that an equation is used to show the relationship that exists between the variables given. In this case, from the information given, we are give the equation f(x) = x + 6 and g(x) = 3x²
From the information, the equation to multiply will be (x + 6)(3x²). It should be noted that the multiplication of the function can be done by opening the brackets and multiplying them.
= (x + 6)(3x²)
= 3x³ + 18x²
In conclusion, the multiplication of the equation that's given will be 3x³ + 18x²
Therefore, based on the calculation done above, it can be noted that the correct option will be D.
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