The correct expansion of (3x + 2)(3x² + 4) will be 9x³ + 12x + 6x² +8.
In order to expand any factor, we need to multiply the first term with all two-term with another bracket.
similarly, multiply the second term with all two-term with another bracket.
Since given that (3x + 2)(3x² + 4)
multiply 3x by (3x² + 4)
⇒ 9x³ + 12x
Now multiply 2 with (3x² + 4)
⇒ 6x² +8
By adding these two we get 9x³ + 12x + 6x² +8 which is the correct expansion of the (3x + 2)(3x² + 4).
Learn more about the expansion of factors.
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