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dedylja [7]
1 year ago
9

Is this equation an identity? (2x+1)^2-(x+1)^2=3(x+1)^2-1

Mathematics
1 answer:
sergey [27]1 year ago
6 0

Answer:

See below, please

Step-by-step explanation:

Left side

{(2x + 1)}^{2}  -  {(x + 1)}^{2}

= (4 {x}^{2}  + 4x + 1) - ( {x}^{2}  + 2x + 1)

= (4 {x}^{2}  -  {x}^{2} ) + (4x - 2x) + (1 -1 )

= 3 {x}^{2}  + 2x

Right side

3 \times  {(x + 1)}^{2}  - 1

= 3 \times ( {x}^{2}  + 2x + 1) - 1

= 3 {x}^{2}  + 6x + 3 - 1

= 3 {x}^{2}  + 6x + 2

After compared with both sides, we can make a conclusion that

This equation isn't an identity.

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Step-by-step explanation:

15,729 = 10 000 + 5 000 + 700 + 20 + 9

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We can also write it like this :

(1 x 10⁴) + (5 x 10³) + (7 x 10²) + (2 x 10¹) + (9 x 10⁰)

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How do defined terms and undefined terms relate to each other ?
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Step-by-step explanation:

Two three-digit numbers are made up of six different digits.

To interpret this, let the two three digit numbers be;

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Interpret;

D=2C

The first digit of the first number can be 1, the second digit 0 and the third digit 2.

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3 years ago
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hram777 [196]

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Step-by-step explanation:

x+2x=15

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Pls help picture provided
Zanzabum

Answer: second option

Step-by-step explanation:

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ax^2+bx+c=0

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Thenrefore, you obtain the following result:

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8 0
3 years ago
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