Question

expand (a-b)³ and using it find the value of (9)³​

Answer 1

Answer:

$a^{3}-b^{2} -3a^{2}b+3ab^{2}$

= 729

Step-by-step explanation:

(a-b)^3

= $a^{3}-b^{2} -3a^{2}b+3ab^{2}$

(9)³

= 9*9*9

= 81*9

= 729

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