Question

Use completing the square to determine which of the following gives the solutions to 4x^2 - 32x + 20 = 8. 

          Use completing the square to determine which of the following gives the solutions to 4x^2 - 32x + 20 = 8.

Added by Joshua C.

Calculus: Early Transcendentals
Calculus: Early Transcendentals
James Stewart 8th Edition
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Use completing the square to determine which of the following gives the solutions to 4x^2 - 32x + 20 = 8.
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Transcript

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00:01 Solve this by completing the square.
00:01 So first step is to move our constant since our leading coefficient is 1.
00:05 It gives us x squared plus 8x.
00:09 I'm going to leave a little bit of space.
00:11 That is equal to negative 20.
00:14 Now in this space here, we are going to do our b term, which is 8.
00:19 8 over 2, square the result.
00:22 That is 4 squared, which is 16...
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