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.

$(5a2+2a−12)+(9a2+8a−4)(5a2+2a−12)+(9a2+8a−4)$

628.

$(10x2−3x+5)−(4x2−6)(10x2−3x+5)−(4x2−6)$

629.

$(−34)3(−34)3$

630.

$n·n4n·n4$

631.

$(10p3q5)2(10p3q5)2$

632.

$(8xy3)(−6x4y6)(8xy3)(−6x4y6)$

633.

$4u(u2−9u+1)4u(u2−9u+1)$

634.

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

635.

$(m+3)(7m−2)(m+3)(7m−2)$

636.

$(11a−6)(5a−1)(11a−6)(5a−1)$

637.

$(n−8)(n2−4n+11)(n−8)(n2−4n+11)$

638.

$(4a+9b)(6a−5b)(4a+9b)(6a−5b)$

639.

$56585658$

640.

$(x3·x9x5)2(x3·x9x5)2$

641.

$(47a18b23c5)0(47a18b23c5)0$

642.

$24r3s6r2s724r3s6r2s7$

643.

$8y2−16y+204y8y2−16y+204y$

644.

$(15xy3−35x2y)÷5xy(15xy3−35x2y)÷5xy$

645.

$4−14−1$

646.

$(2y)−3(2y)−3$

647.

$p−3·p−8p−3·p−8$

648.

$x4x−5x4x−5$

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

649.

$80a3+120a2+40a80a3+120a2+40a$

650.

$−6x2−30x−6x2−30x$

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.

$(2.4×108)(2×10−5)(2.4×108)(2×10−5)$

654.

$9×1043×10−19×1043×10−1$

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 $t=3.t=3.$