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Equation Given
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x² + 2x = 17

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Add the constant to make it perfect square
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x² + 2x + (2/2)² - ²(2/2)² = 17

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Evaluate the brackets
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x² + 2x + (1)² - ²(1)² = 17

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Form the perfect square
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(x + 1)² - 1 = 17

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Add 1 to both sides
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(x + 1)² = 17 + 1
(x + 1)² = 18

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Square root both sides
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√(x + 1)² = $\pm$ √18

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Solve for x
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x = 4.24 - 1 or - 4.24 -1

x = 3.24 or - 5.24 (nearest hundredth)

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Answer: x = x = 3.24 or - 5.24
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7 0

3 years ago

Is each fraction in simples form? Write yes or no 2/4

shusha [124]

Hey there! :D

When a fraction is still divisible by a number, then it is not in it's simplest form.

For example, 3/6.

I know for a fact that 6/3=2 <== 3 is also divisible by itself.

3/6 (3/3=1) (6/6=1)

1/2 <== simplest form.

Try the same with 2/4.

4 is divisible by 2.

4/2= 2

2/2=1

1/2 is the simplest form.

I hope this helps!
~kaikers

8 0

3 years ago

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