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What number must be added to the polynomial to complete the square of x2 plus 18x?
81. To complete the square of x^2 + 18x, you take half the coefficient of the x term (half of 18 is 9), and square that number (9 squared is 81). To confirm this works, you can now factor x^2 + 18x + 81 and see that it factors as (x+9)(x+9), or (x+9)^2, a perfect square.
What number must you add to complete the square x2 plus 18x equals 29?
If: x^2 +18x = 29 Then completing the square: (x+9)^2 -81 = 29 or (x+9)^2 = 110
What is the complete factor of this problem 4x3 plus 12x2 plus 3x plus 9?
4x3+12x2+3x+9
What number can be added to complete the square x2 plus 10x equals 14?
9 needs to be added to complete the square. When squaring (x + n), the result is x2 + 2nx + n2. We have +10x, so n must be 10/2 = 5. Thus: (x + 5)2 = x2 +10x + 25 = x2 +10x + 14 + 9 So 9 needs to be added to complete the square, giving: x2 +10x + 14 = (x + 5)2 - 9
What number must you add t complete the square x2 plus 18x equals -13?
81. To complete the square, halve the coefficient of the x term (18/2 = 9) and add the square of this (92 = 81) to both sides: x2 + 18x = -13 ⇒ x2 + 18x + 81 = -13 + 81 ⇒ (x + 9)2 = 68
Which are square roots of 81?
±9 (plus or minus 9).
What is the square root of 4 plus the square root of 9?
sqrt(4) = 2 sqrt(9) = 3 Therefore, the square root of 4 plus the square root of 9 is equal to 2 + 3 = 5.
If you had 4 numbers 1996 how do you get 2 using any math?
1 plus (6 divided by ((square root of 9) plus (square root of 9))) or 9/(9-6)-1=2
What is the square root of 81 plus 81?
9
Square root of 9 plus 7?
The square root of 9 is 3, therefore 3 + 7 = 10
What is the square root of 81 plus 32?
square root of 81 is 9...and plus 32 is 41.so the answer is 41
What number must be added to complete the square of x SQUARED plus 12x equals -3?
9
