Solve Equations with Square & Cube Roots

Daniel Math Academy · Grade 8 Math

Solve Equations with Square & Cube Roots

Skill C.2 · Square roots & cube roots · ★★☆ Medium · Quarter 1

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Solve. Give every solution.

1. 1
   $x^3=-0.001$ 
2. 2
   $x^3=-512$ 
3. 3
   $x^3=343$ 
4. 4
   $x^3=-1,000$ 
5. 5
   $x^2=\frac{121}{16}$ 
6. 6
   $x^2=169$ 
7. 7
   $x^3=-0.027$ 
8. 8
   $x^2=121$ 
9. 9
   $x^3=-343$ 
10. 10
    $x^2=16$ 
11. 11
    $x^3=-\frac{1}{216}$ 
12. 12
    $x^2=\frac{25}{36}$ 

Daniel Math Academy · Grade 8 Math

Answer Key

C.2 Solve Equations with Square & Cube Roots · ★★☆ Medium

1. 1$x=-0.1$
2. 2$x=-8$
3. 3$x=7$
4. 4$x=-10$
5. 5$x=\pm \frac{11}{4}$
6. 6$x=\pm 13$
7. 7$x=-0.3$
8. 8$x=\pm 11$
9. 9$x=-7$
10. 10$x=\pm 4$
11. 11$x=-\frac{1}{6}$
12. 12$x=\pm \frac{5}{6}$