0
There are missing + or - symbols, but the square is completed in this case by dividing the coefficient of the x term by 2, giving:
(x ± 2)2 = x2 ±4x + 4
So to get to the original equation, there is needed an extra +1 or -9:
(x ± 2)2 +1 = x2 ±4x +5
(x ± 2)2 - 9 = x2 ±4x - 5
Depending upon what the missing (+-) symbols are. (Whatever the sign before the 4x, the same is used in the brackets of the square.)
What else can I help you with?
What number must be added to the polynomial to complete the square x2-5x?
-3
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 x2-9x?
-7
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 x2 plus 9x to complete the square?
To complete the square for the expression (x^2 + 9x), take half of the coefficient of (x) (which is 9), square it, and add that value. Half of 9 is (4.5), and squaring it gives (20.25). Therefore, the number that must be added is (20.25). Thus, the completed square form is ((x + 4.5)^2).
What number must be added to 149 total 516\?
369 must be added to get 518
What number must be added to x2 - 7x to complete the square?
9
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 group of organisms must be added to any food chain or food web to form a complete food cycle?
Decomposers must be added to any food chain or food web to form a complete food cycle.
What number must be added to complete the square of x SQUARED plus 12x equals -3?
9
What number must be added to -15 to get 11?
26
What least number must be added with 1 to obtain a prime number?
1
