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Cubic and cube roots
- Lesson: 1a1:37
- Lesson: 2a1:56
- Lesson: 2b1:00
- Lesson: 2c1:11
Cubic and cube roots
Whenever we see "roots", let it be cubic roots or square roots, we know for sure that we will need to do prime factorization to find out the prime factors of the numbers. In this section, we use factors and multiples to find perfect cube whole numbers and cubic roots.
Basic Concepts: Squares and square roots, Estimating square roots, Prime factorization, Square and square roots
Related Concepts: Conversions involve squares and cubic, Operations with radicals, Conversion between entire radicals and mixed radicals
Lessons
To cube: Raise the number to the third power
Ex: 33 =3×3×3=27
63 = 6×6×6=216
To cube root: Finding the three identical factors
Ex: 364 = 34×4×4 = 4
3125 = 35×5×5 = 5
Perfect Cubes: 03= 0
13 = 1
23 = 8
33 = 27
43 = 64
53 = 125
63 = 216
73 = 343
83 = 512
93 = 729
103 = 1000
Ex: 33 =3×3×3=27
63 = 6×6×6=216
To cube root: Finding the three identical factors
Ex: 364 = 34×4×4 = 4
3125 = 35×5×5 = 5
Perfect Cubes: 03= 0
13 = 1
23 = 8
33 = 27
43 = 64
53 = 125
63 = 216
73 = 343
83 = 512
93 = 729
103 = 1000
- 1.Understanding the negative cube roots of the followinga)327 - 3273−27
- 2.Find the cube rootsa)3−4913b)31331c)−32197
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Cubic and cube roots
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