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# Express x2+8x+5=0 in the form (x+p)2+q=0

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I'm sorry I'm not sure which topic this is from.

Express x2+8x+5=0 in the form (x+p)2+q=0

Thank you so much

Sep 11, 2017

#1
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For this equation, you will need to complete the square.

x^2 + 8x +5 = 0.

Add (b/2)^2 to get...  (Because you added 16 to the left side of the equation, you have to add 16 to the right side of the equation as well. And in this case, (b/2)^2 is 16.

(x^2 +8x + 16) + 5 = 16

Factor to get...

(x+4)^2 +5 = 16.

Subtract both sides by 16 to get...

(x+4)^2  -11 = 0.

Does anyone know how to write exponents in Windows 10? Sep 11, 2017
#2
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Thank you so much

Ashreeta  Sep 11, 2017
#3
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Windows 10 has a "Microsoft Mathematics" calculator that you can download for free. You can do all math symbols on it by learning how to use it.

Guest Sep 11, 2017
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Thanks. But do you know how to type them on the internet?

Gh0sty15  Sep 11, 2017
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The calculator has a blank page that you can type anything you want and it will appear on that page. Then you can copy and paste it anywhere you want.

Guest Sep 11, 2017