College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.2: 48

Answer

$=30x^{11}y^{12}$

Work Step by Step

When multiplying two exponential expressions, group factors with the same base: $$(-5x^{4}y)(-6x^{7}y^{11})$$ $$=(-5\times(-6))(x^{4}\times x^{7})(y\times y^{11})$$ $$=30x^{(4+7)}y^{(1+11)}$$ $$=30x^{11}y^{12}$$
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