Prealgebra 2e

# Practice Test

Prealgebra 2ePractice Test

### Practice Test

626.

For the polynomial $8y4−3y2+18y4−3y2+1$

1. Is it a monomial, binomial, or trinomial?
2. What is its degree?

In the following exercises, simplify each expression.

627.

$( 5 a 2 + 2 a − 12 ) + ( 9 a 2 + 8 a − 4 ) ( 5 a 2 + 2 a − 12 ) + ( 9 a 2 + 8 a − 4 )$

628.

$( 10 x 2 − 3 x + 5 ) − ( 4 x 2 − 6 ) ( 10 x 2 − 3 x + 5 ) − ( 4 x 2 − 6 )$

629.

$( − 3 4 ) 3 ( − 3 4 ) 3$

630.

$n · n 4 n · n 4$

631.

$( 10 p 3 q 5 ) 2 ( 10 p 3 q 5 ) 2$

632.

$( 8 x y 3 ) ( −6 x 4 y 6 ) ( 8 x y 3 ) ( −6 x 4 y 6 )$

633.

$4 u ( u 2 − 9 u + 1 ) 4 u ( u 2 − 9 u + 1 )$

634.

$( s + 8 ) ( s + 9 ) ( s + 8 ) ( s + 9 )$

635.

$( m + 3 ) ( 7 m − 2 ) ( m + 3 ) ( 7 m − 2 )$

636.

$( 11 a − 6 ) ( 5 a − 1 ) ( 11 a − 6 ) ( 5 a − 1 )$

637.

$( n − 8 ) ( n 2 − 4 n + 11 ) ( n − 8 ) ( n 2 − 4 n + 11 )$

638.

$( 4 a + 9 b ) ( 6 a − 5 b ) ( 4 a + 9 b ) ( 6 a − 5 b )$

639.

$5 6 5 8 5 6 5 8$

640.

$( x 3 · x 9 x 5 ) 2 ( x 3 · x 9 x 5 ) 2$

641.

$( 47 a 18 b 23 c 5 ) 0 ( 47 a 18 b 23 c 5 ) 0$

642.

$24 r 3 s 6 r 2 s 7 24 r 3 s 6 r 2 s 7$

643.

$8 y 2 − 16 y + 20 4 y 8 y 2 − 16 y + 20 4 y$

644.

$( 15 x y 3 − 35 x 2 y ) ÷ 5 x y ( 15 x y 3 − 35 x 2 y ) ÷ 5 x y$

645.

$4 −1 4 −1$

646.

$( 2 y ) −3 ( 2 y ) −3$

647.

$p −3 · p −8 p −3 · p −8$

648.

$x 4 x −5 x 4 x −5$

In the following exercises, factor the greatest common factor from each polynomial.

649.

$80 a 3 + 120 a 2 + 40 a 80 a 3 + 120 a 2 + 40 a$

650.

$−6 x 2 − 30 x −6 x 2 − 30 x$

651.

According to www.cleanair.org, the amount of trash generated in the US in one year averages out to $112,000112,000$ pounds of trash per person. Write this number in scientific notation.

652.

Convert $5.25×10−45.25×10−4$ to decimal form.

In the following exercises, simplify, and write your answer in decimal form.

653.

$( 2.4 × 10 8 ) ( 2 × 10 −5 ) ( 2.4 × 10 8 ) ( 2 × 10 −5 )$

654.

$9 × 10 4 3 × 10 −1 9 × 10 4 3 × 10 −1$

655.

A hiker drops a pebble from a bridge $240240$ feet above a canyon. The polynomial $−16t2+240−16t2+240$ gives the height of the pebble $tt$ seconds a after it was dropped. Find the height when $t=3.t=3.$

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