6.1.6 Practice

Algebra 16.1.6 Practice

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6.1.6 • Practice

Complete the following questions to practice the skills you have learned in this lesson.

For questions 1 - 5, simplify each expression completely.

$14ab^2-8ab^2$

$8ab^2$
$14ab^2$
$22ab^2$
$6ab^2$

$(8k^2-3k+14)+(8k+17)$

$(7b^2-2b-12)-(4b^2+9b-7)$

$11b^2-11b-5$
$3b^2-11b-5$
$3b^2+7b-19$
$11b^2+7b-19$

$(7mn^3-2m^2n-12mn)-(3mn^3-4mn)$

$4mn^3-10m^2n$
$4mn^3-2m^2n-16mn$
$4mn^3-2m^2n-8mn$
$10mn^3-2m^2n-16mn$

$(r^3-r^2s)-2(rs^2+s^3)+(r^2s+2rs^2)$

$r^3+rs^2-2s^3$
$r^3-2s^3$
$r^3-rs^2-2s^3$
$r^3+2s^3$

Use the following polynomial functions to answer questions 6 – 10.

$p(x) = 12x^2+3x-4$
$d(x) = 3x^2-11x-6$

$p(4)$

48
192
200
–2

$d(-3)$

–12
54
113
95

$p(x) + d(x)$

$p(x) - d(x)$

$p(5) - d(-6)$

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