SOLUTION: Add a term to complete the square: 1) x^2+6x+______ 2)x^2-16x+______ Solve by completing the square. Give exact solutions and approximate solutions to the nearest hundredth.

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Question 73556This question is from textbook Holt Algebra 2
: Add a term to complete the square:
1) x^2+6x+______
2)x^2-16x+______
Solve by completing the square. Give exact solutions and approximate solutions to the nearest hundredth.
3) x^2-6x=6=0
These questions are not from the textbook. They are from a different worksheet. This question is from textbook Holt Algebra 2

Answer by checkley75(3666) (Show Source):
You can put this solution on YOUR website!
1) X^2+6X+9 (X+3)(X+3)
2) X62-16X+64 (X-8)(X-8)
3) X^2-6X+6=0 [I ASSUME THE SECOND = SIGN SHOULD BE A + SIGN.
USING THE QUADRATIC EQUATION WE GET
X=(-B+-SQRT[B^2-4AC])/2A
X=(6+-SQRT[36-4*1*6])/2*1
X=(6+-SQRT[36-24])/2
X=(6+-SQRT12)/2
X=(6+-3.46)/2
X=(6+3.46)/2
X=9.46/2
X=4.73 ANSWER.
X=(6-3.46)/2
X=2.54/2
X=1.27 ANSWER.