Question

Without actually calculating the cubes, find the value of (1)³ +(2)³ +2 (4)³ + (-5)³+ (-6)³.

Answer 1

Question:-

❇ Without actually calculating the cubes, find the value of (1)³ +(2)³ +2 (4)³ + (-5)³+ (-6)³.

✨$\huge\mathcal\color{teal} AnsWer:-$

=} 1 + 8 + 2 × 64 + (-125) + (-216)

=} 9 + 128 - 125 - 126

=} 137 - 251

=} -114

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Answer 2

Step-by-step explanation:

Using identity:

a³ + b³ = ( a + b ) ( a² + b² - ab )

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