Multiply the rational expressions and simplify. fraction numerator 18 a space minus space 12 a squared over denominator 4 a squared plus 4 a space plus space 1 end fraction cross times fraction numerator 4 a squared plus 8 a space plus space 3 over denom

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Multiply the rational expressions and simplify. fraction numerator 18 a space minus space 12 a squared over denominator 4 a squared plus 4 a space plus space 1 end fraction cross times fraction numerator 4 a squared plus 8 a space plus space 3 over denom

Multiply the rational expressions and simplify.

fraction numerator 18 a space minus space 12 a squared over denominator 4 a squared plus 4 a space plus space 1 end fraction cross times fraction numerator 4 a squared plus 8 a space plus space 3 over denominator 4 a squared minus space 9 end fraction

A. fraction numerator 6 a over denominator 2 a plus 1 end fraction

B. minus fraction numerator 6 a over denominator 2 a plus 1 end fraction

C. fraction numerator 6 a left parenthesis 3 minus 2 a right parenthesis over denominator left parenthesis 2 a plus 1 right parenthesis left parenthesis 2 a minus 3 right parenthesis end fraction

D. -3