Answer:
12x^4+20x^2+3
Explanation:
(6x^2*2x^2)+(6x^2*3)+(1*2x^2)+(1*3)
12x^4+18x^2+2x^2+3
(6x^2+1) • (2x^2+3) =
12x^4 + 18x^2 + 2x^2 +3 =
12x^4 + 20x^2 +3
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