Question

Expand (5a-1/3x) ^3....​

Answer 1

Step-by-step explanation:

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Answer 2

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$5a - {\frac{1}{3}x}^3$

we know,

$(a -b)^3$

= $a³ - b³ - 3ab(a-b)$

So,

Let a be$5a$ and b be $\frac{-1}{3}x$

Then,

$(5a)³-$$(\frac{1}{3}x)³-$$3\times 25a²$$\frac{1}{9}$

= $125a³-$$\frac{1}{27}x³-$$75a²$$\frac{1}{9}$