длинное умножение 12*12

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

☐²

x^☐

√☐

^□√☐

□□

log_□

θ

∞

∫

ddx

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

simplify solve for inverse tangent line

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Steps Examples

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long multiplication 12· 12

Solution

144

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Solution steps

One step at a time

12· 12

Line up the numbers

	1	2
×	1	2

Multiply the top number by the bottom number one digit at a time starting with the ones digit (from right to left)

Multiply the top number by the bolded digit of the bottom number

	1	2
×	1	2

Mutliply the bold numbers: 2· 2=4

	1	2
×	1	2

Mutliply the bold numbers: 1· 2=2

	1	2
×	1	2

Multiply the top number by the bolded digit of the bottom number

	1	2
×	1	2

Mutliply the bold numbers: 2· 1=2

		1	2
	×	1	2

		2	4
		2

Mutliply the bold numbers: 1· 1=1

		1	2
	×	1	2

		2	4
	1	2

Add the rows to get the answer. For simplicity, fill in trailing zeros

		1	2
	×	1	2

	0	2	4
	1	2	0

24+120=144

=144

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Notebook

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

длинное умножение 12*12

Solution

Solution steps

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