What is the factored form of x^3-1

Keeping in mind that

1² = 1
1³ = 1
1⁴ = 1
1¹⁰⁰⁰⁰⁰⁰ = 1

Notice how both terms are perfect cubes.  You can factor using the difference of cubes formula:



The factored form of  x³ - 1 is (x - 1)(x² + x + 1).

1. 0.3 •4 is the same as 4 groups of 0.32. 7•0.8 is the same as 7 groups of 0.83. it increases by 0.5 every time, so 0.5x4 it increases by 0.9 every time, so 0.9x5. 0.9•12=10.86. 0.47•5=2.35i can finish the next ones in a separate post