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sesenic [268]
3 years ago
5

the difference between the squares of two numbers is 3. Twice the square of the first number increased by the square of the seco

nd number is 9. find the numbers.
Mathematics
1 answer:
Maurinko [17]3 years ago
8 0

Answer:

The number are \sqrt{6} and \sqrt{6} .

Step-by-step explanation:

Given as :

The difference between the squares of two number = 3

And , Twice the square of the first number increased by the square of the second number is 9

Now, Let The first number = F

And The second number = S

So , According to question

F² - S² = 3                  .......A

2 F² - S² = 9               ........B

Now, solving the equations

( 2 F² - S² ) - ( F² - S² ) = 9 - 3

Or, ( 2 F² - F² ) + ( S² - S² ) = 6

Or, F² + 0 = 6

∴   F = \sqrt{6}

Putting the value of F in eq A

So, (  \sqrt{6} )² - S² = 3  

Or, 6 - 3 = S²

Or, S² = 3

∴   S = \sqrt{3}

So, The number are \sqrt{6} , \sqrt{6}

Hence The number are \sqrt{6} and \sqrt{6} . Answer

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3 years ago
I need help seeing what I did wrong
Makovka662 [10]

Answer:  The two roots are x = 3/2 and x = -2

=========================================================

Explanation:

You have the right idea so far. But the two numbers should be 3 and -4 since

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The -1 being the coefficient of the x term.

This means you need to change the -3x and 4x to 3x and -4x respectively. The other inner boxes are correct.

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Refer to the diagram below to see one way to fill out the box method, and that helps determine the factorization.

If we place a 2x to the left of -2x^2, then we need an -x up top because 2x*(-x) = -2x^2

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3 years ago
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