## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$t=14$ or $t=-14$
$t^{2}-196=0\qquad$...recognize the difference of squares: $a^{2}-b^{2}=(a-b)(a+b)$ $(t-14)(t+14)=0\qquad$...apply the principle of zero products. $t-14=0$ or $t+14=0$ $t=14$ or $t=-14$