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Best Answer

x^(3) + 125 =>

x^(3) + 5^(3)

This factors to

(x + 5)(x^(2) - 5x + 5^(2) ) or (x + 5)(x^(2) - 5x + 25)

NB The clue is to spot that the constant (125) is a cubic numbers ( 5^(3)).

Similarly with other 'cubic factorings'.

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lenpollock

Lvl 16
5mo ago
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Soumya Babu

Lvl 4
5mo ago

x^(3) + 125

= (x^3) + (5^3)

This factors into

(x + 5){x^(2) - 5x + 5^(2) }

= (x + 5)(x^(2) - 5x + 25)

The clue is to recognize that the constant (125) is a cubic number (5^3).

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Wiki User

9y ago

(x + 5)(x^2 - 5x + 25)

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Wiki User

13y ago

x3 + 125 = (x + 5)(x2 - 5x + 25)

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Q: How do you factor x to the third power plus 125?
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