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September 22, 2014

September 22, 2014

Posted by **tanya** on Thursday, February 16, 2012 at 12:18pm.

(1)x^2+16x=36

(2)x^2=10x-16

(3)3x=x^2-4

- math -
**Steve**, Thursday, February 16, 2012 at 6:21pmI'll do one by completing the square. Use the same method for the others. Come on back if you run into trouble.

x^2 + 16x = 36

x^2 + 16x + 64 = 36+64

(x+8)^2 = 100

x+8 = ±10

x = -8 ± 10

x = -18,2

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