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1.Factoring the Sum or Difference of two cubes

1.Factor:1–r³

2.Factor:125+w³

With solution​


Sagot :

Answer:

1. (1−r)(1+r+r^2)

2. (5+w)(25−5w+w^2)  

Step-by-step explanation:

1. 1^3 - r^3

(1 - r)(1^2 + (1)(r) + r^2)

= (1 − r)(1 + r + r^2)

2. 5^3 + w^3

(5 + w)(5^2 - (5)(w) + w^2)

= (5 + w)(25 − 5w + w^2)