expand (2x+5y)^3

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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

☐²

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ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

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expand (2x+5y)³

Solution

8x³+60x²y+150xy²+125y³

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(2x+5y)³

Apply Perfect Cube Formula: (a+b)³=a³+3a²b+3ab²+b³

(2x+5y)³=(2x)³+3(2x)²· 5y+3· 2x(5y)²+(5y)³

=(2x)³+3(2x)²· 5y+3· 2x(5y)²+(5y)³

Simplify (2x)³+3(2x)²· 5y+3· 2x(5y)²+(5y)³: 8x³+60x²y+150xy²+125y³

=8x³+60x²y+150xy²+125y³

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−▭▭	<	7	8	9	÷	`AC`
+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

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expand (2x+5y)^3

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