First, we can use the distributive property to multiply the first term of the first binomial, 3x, by each term in the second binomial, 2x and 4:
3x * 2x = 6x^2
3x*4 = 12x
Similarly, we can multiply the second term of the first binomial, 9, by each term in the second binomial:
9*2x = 18x
9*4 = 36
Now, we can combine like terms to express the expression as a trinomial:
(6x^2 + 12x) + (18x + 36)
= 6x^2 + 30x + 36
Express as trinomial
(3x+9)(2x+4)
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