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The idea is to take half the linear part (12, in this case), then square it. The constant part must be equal to this result.

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โˆ™ 2013-05-09 19:39:38
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Q: What number must you add to complete the square of x2 12x -9?
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What number must you add to complete the square x2 plus 12x equals 40?

You must add 36 to complete the square on the left hand side.You must add 36 to complete the square on the left hand side.You must add 36 to complete the square on the left hand side.You must add 36 to complete the square on the left hand side.


What number must be added to complete the square of x SQUARED plus 12x equals -3?

9


What number must you add to complete the square of x2 plus 12x equals 40?

The constant term - the part without a variable - must be equal to the square of one half the linear term - the number in front of the "x". That is, it must be (12/2)2 = 36.


What number must you add to complete the square of x2 12x equals -9?

x2+12x + 9 = 0. we want the 9 to be a 36. so add 27 to both sides. then (x+6)2-27 = 0.


What number must you add to complete the square x2 12x -5?

I assume you mean,X2 + 12X - 5 = 0X2 + 12X = 5Now, halve the linear term (12), square it and add it to both sidesX2 + 12X + 36 = 5 + 36factor on the left, gather terms on the right(X + 6)2 = 41(X + 6)2 - 41 = 0==============vertex form.... (- 6, - 41)========================--------------vertexAnd that number added is 36


How do you complete the square x squared plus 12x equals 5?

x^2 + 12x = 5 x^2 + 12x + __ = 5 + __ x^2 + 12x + 36 = 5 + 36 (The 36 I got from taking half of 12 and then squaring that number (which is 6).) (x + 6)^2 = 41 x + 6 = (the square root of 41) x = (the square root of 41) - 6. Hope that helped :)


What number is used to complete the square for the equation x squared minus twelve x equal zero?

x2 - 12x + 36 = (x - 6)2


What number must you add to complete the square x2 plus 12x equals 16?

Add? I will show you the process. X^2 + 12X = 16 halve the linear term (12), square it and ADD it to both sides X^2 + 12X + 36 = 16 + 36 factor the right side; gather terms right (X + 6)^2 = 52 (X + 6)^2 - 52 = 0 (-6,-52) vertex of function As you see 36 was added to both sides


How many square feet is 12x 14?

168 square feet


What is the square root of 12x?

2 root 3x


What number must you add to complete the square of x2 12x equals 9?

Unfortunately, limitations of the browser used by Answers.com means that we cannot see most symbols. It is therefore impossible to give a proper answer to your question. Please resubmit your question spelling out the symbols as "plus", "minus", "times", "equals", "squared".


In solving the quadratic equation x2 plus 12x - 5 equals 0 what value would complete the square?

x2 + 12x - 5 = 0x2 + 12x - 5 + 5 = 0 + 5x2 + 12x = 5x2 + 12x + (12/2)2 = 5 + (12/2)2x2 + 12x + (6)2 = 5 + 36(x + 6)2 = 41 (square root of both sides)x + 6 = ± √41x + 6 - 6 = -6 ± √41x = -6 ± √41x ≈ -6 + 6.4 = -0.4x ≈ -6 - 6.4 = -12.4

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