Elementary Algebra 2e

# Practice Test

### Practice Test

In the following exercises, simplify.

766.

$81+14481+144$

767.

$169m4n2169m4n2$

768.

$36n1336n13$

769.

$313+52+13313+52+13$

770.

$520+2125520+2125$

771.

$(36y)(250y3)(36y)(250y3)$

772.

$(2−5x)(3+x)(2−5x)(3+x)$

773.

$(1−2q)2(1−2q)2$

774.

$a124a124$
$b213b213$

775.

$81x12481x124$
$64y18664y186$

776.

$64r1225r664r1225r6$

777.

$14y37y14y37y$

778.

$256x754x25256x754x25$

779.

$5124−23245124−2324$

780.

$2561425614$
$2431524315$

781.

$49324932$

782.

$25−5225−52$

783.

$w34w74w34w74$

784.

$(27s35)13(27s35)13$

In the following exercises, rationalize the denominator.

785.

$326326$

786.

$3x+53x+5$

In the following exercises, solve.

787.

$32x−3−20=732x−3−20=7$

788.

$3u−2=5u+13u−2=5u+1$

In the following exercise, solve.

789.

A helicopter flying at an altitude of 600 feet dropped a package to a lifeboat. Use the formula $t=h4t=h4$ to find how many seconds it took for the package to reach the hiker. Round your answer to the nearest tenth of a second.