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3 years ago

Solve for x. 3x ^2 -4 = 8

Mathematics

2 answers:

LenKa [72]3 years ago

5 0

Answer:

x = ±2

Step-by-step explanation:

3x ^2 -4 = 8

Add 4 to each side

3x ^2 -4+4 = 8+4

3x^2 =12

Divide each side by 3

3x^2 =12

3x^2/3 = 12/3

x^2 = 4

Take the square root of each side

sqrt(x^2) = ±sqrt(4)

x = ±2

hodyreva [135]3 years ago

4 0

Answer:

x = 2

Step-by-step explanation:

3x ^2 -4 = 8

3x^2 = 12

3x^2/3 = 12/3

x^2 = 4

Square root 4 is 2

x = 2

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&&(~{{ 0}} &,&{{ 27}}~) 
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\end{array}
\\\\\\
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\stackrel{\stackrel{average}{rate~of~change}}{slope}= {{ m}}\implies 
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2 years ago

Read 2 more answers

Dude this should be so easy but this is going in one ear and out the other how do I do this send help

kipiarov [429]

Answer:

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Explanation:

Given:

speed: 17 miles/hour

distance: 8 miles

Formula:

time taken = distance ÷ speed

Solve:

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1 year ago

What is 7/4 times 7/3

yaroslaw [1]

49/12

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2 years ago

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Dominik [7]

Answer:

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Step-by-step explanation:

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