0
Add your answer:
Earn +20 pts
Find a positive number that equals 12 when added to its square?
3
What number must be added to complete the square of x SQUARED plus 12x equals -3?
9
Find a positive number that equals to 72 when added to its square?
82+8 = 72
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 be added to the polynomial to complete the square x2-9x?
-7
Find a positive number that equals 12 when added to its square?
3
What number must be added to complete the square of x SQUARED plus 12x equals -3?
9
Find a positive number that equals 110 when added to its square?
102 +10=110
Find a positive number that equals to 72 when added to its square?
82+8 = 72
What number must be added to the polynomial to complete the perfect square x2-24x?
144
What number must be added to the polynomial to complete the square x2-5x?
-3
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 be added to the polynomial to complete the square x2 7x?
49/4 or 12.25
What number must be added to the polynomial to complete the square x2-9x?
-7
What number must be added to the polynomial to complete the square x2 - 20x?
Adding 100 completes the square. { I wonder why you want to complete the square when the expression already factors as x(x-20) }.
What is a positive number that equals 2 when added to its square?
1 is the number you are looking for.1 + 12 = 1 + 1 = 2.QED
What number must you add to complete the square x2-8x equals 3?
X2 - 8X = 3halve the linear term (- 8 ), square it and add it to both sidesX2 - 8X + 16 = 3 + 16factor left, gather terms right(X - 4)2 = 19(X - 4)2 - 19 = 0-------------------------(4, - 19)----------------the vertex16 is the number that needed to be added to both sides to complete the square
