-17
Gabriella Roob
Wiki User
∙ 12y agoYou must add 19.
Depending on the value of x, any other number may or may not result in a square.
4
square root -5 minus 14 or - square root -5 minus 14
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.
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
x2 + 20x - 39 = 0: Add 61 giving: x2 + 20x + 100 = (x + 10)2
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.
25
You need to add -22.
You would add 4.
You must add 1
You need to add -6
You must add (17n + 144).
4
it is 121
94
square root -5 minus 14 or - square root -5 minus 14
Put in the - or + values for 4x and 7 is the first step in finding the number needed