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nydus/The First Steps in AlgebraPublic

Page 178 of 227

Table of Contents

Cube Roots of Compound Expressions.

$x^{3} + 3 x^{2} + 2 x - 8$ .

$x^{3} - 7 x^{2} + 4 x$ .

$2 b^{3} + 18 a b c - 15 c^{3}$ .

$2 - x - 2 x^{2} + 2 x^{3}$ .

$- 3 b^{3} - 4 c^{3} + 6 a b c$ .

$- x^{4} - 2 x^{3} + 4 x^{2} - 7 x + 5$ .

$2 x + x^{2} + x^{3} + x^{5}$ .

$2 b^{3} - 4 a^{2} b + 2 a b^{2}$ .

$2 b^{4} - 2 a^{3} b^{3} - a b^{2}$ .

$4 x^{3} - 3 x^{2} y - 4 x y^{2} + 7 y^{3}$ .

Exercise20.

$c$ .

$y - b$ .

$x - 3 y - 7 c$ .

$7 a + 2 b - 2$ .

$2 a + x$ .

$13 x - 15 y + 13 z$ .

$2 a - 2 b + 2 c$ .

$5 a + b - 4 c$ .

$4 x - 5 y + 2 z$ .

$3 a - b$ .

$2 x + 3 y + z$ .

$- 8 x + y$ .

$6 z - 2 y - z$ .

$(a + c) x - (a - b) y + (a - c) z$ .

$(2 a + 5 c) x - (3 a + 4 b) y - (6 b + 7 c) z$ .

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