SOLUTION: Completing the square.
1.)x^2+6x=7
2.) x^2+8x=9
3.) 9x^2+19x=-8 (solve by completing the square an coefficient of x^2 is 1)
I'm looking for the processes of these. The
Algebra ->
Quadratic Equations and Parabolas
-> SOLUTION: Completing the square.
1.)x^2+6x=7
2.) x^2+8x=9
3.) 9x^2+19x=-8 (solve by completing the square an coefficient of x^2 is 1)
I'm looking for the processes of these. The
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Question 1026796: Completing the square.
1.)x^2+6x=7
2.) x^2+8x=9
3.) 9x^2+19x=-8 (solve by completing the square an coefficient of x^2 is 1)
I'm looking for the processes of these. The book examples don't help.
You can put this solution on YOUR website! .
Completing the square.
1.)x^2+6x=7
2.) x^2+8x=9
3.) 9x^2+19x=-8 (solve by completing the square an coefficient of x^2 is 1)
I'm looking for the processes of these. The book examples don't help.
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1) = ,
= = , ( I added and distracted 9 )
= ( = )
= , ( Now take the square root from both sides )
= +/- 4,
x = 3 +/- 4,
x = 7 and/or x = -1.
2) x^2+8x=9 is exactly the same. Do it yourself.
3) 9x^2+19x=-8 I suspect you missed something here.
You can put this solution on YOUR website! Completing the square.
1.)x^2+6x=7
2.) x^2+8x=9
3.) 9x^2+19x=-8 (solve by completing the square an coefficient of x^2 is 1)
I'm looking for the processes of these. The book examples don't help.
------ Adding the value of b, and then squaring the result ------ Adding ------ Substituting + 6 for b ------- Taking square root of both sides
Follow the above steps and you should be able to do number 2
Number 3 can get quite MESSY. Did you really mean: , or something else? If it's correct, factor
out 9 on both sides to get a coefficient of 1 on , and once again, follow the steps in number 1
