Answer
$8t^2+8t-1$
Work Step by Step
The given expression is
$=(t^2-4t-4)+(7t^2+12t+3)$
Clear the parentheses.
$=t^2-4t-4+7t^2+12t+3$
Group like terms.
$=t^2+7t^2-4t+12t-4+3$
Combine like terms.
$=8t^2+8t-1$
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
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 - 10.4 - Inverse of a Function - Exercises - Page 574: 66
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