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2/7+1/7

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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

lcm gcf factors long addition scientific

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Steps Examples

Generated by AI

đơn vị (

−4

)

Solution

(

2√21

−4√21

1√21

)

Show Steps

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Solution steps

One step at a time

(

−4

)

Tính toán vector đơn vị của |⃗ a |: ̂ a =1|⃗ a | ⃗ a

|⃗ a |: |(

−4

)|=√21

̂ a =1√21 (

−4

)

Tinh chỉnh: 1√21 (

−4

)=(

2√21

−4√21

1√21

)

2√21

−4√21

1√21

)

Fractions Add, Subtract Like Denominators Examples

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−4

) hoặc chọn bên dưới

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

2/7+1/7

Solution

Solution steps

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