#### Answer

4$r^{2}$-9

#### Work Step by Step

Given: (2r-3)(2r+3)
FOIL method: 4$r^{2}$+6r-6r-9
Combine like terms: 4$r^{2}$-9

Published by
Prentice Hall

ISBN 10:
0133281140

ISBN 13:
978-0-13328-114-9

4$r^{2}$-9

Given: (2r-3)(2r+3)
FOIL method: 4$r^{2}$+6r-6r-9
Combine like terms: 4$r^{2}$-9

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