Big Ideas Math - Algebra 1, A Common Core Curriculum

Published by Big Ideas Learning LLC
ISBN 10: 978-1-60840-838-2
ISBN 13: 978-1-60840-838-2

Chapter 10 - Radical Functions and Equations - Chapter Test - Page 579: 9

Answer

$x=44$

Work Step by Step

Solve for $x$: $$\sqrt {2x-7}-3=6$$ $$\sqrt {2x-7}=6+3$$ $$\sqrt {2x-7}=9$$ $$ {2x-7}=81$$ $$ {2x}=88$$ $$x=44$$ Check the solution: $$\sqrt {2(44)-7}-3\stackrel{?}{=}6$$ $$\sqrt {81}-3\stackrel{?}{=}6$$ $$6=6\checkmark$$
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