The number that is being multiplied by the variable ( the letter) so like if you have 2X the 2 is the coefficient
In a standard binomial equation: ax² + bx + c = 0
To complete the square; divide the middle coefficient "b" in half and square it to find "c".
(-5/2)² = 25/4
x² - 5x + 25/4 = 25/4
completes the square:
(x - 5/2)² = 25/4
The answer is 20.
4 isn't divisible by 5 and 5 isn't divisible by 4.
4 8 12 16 24 28
5 10 15 20 25
The correct answer is 12
12 x 600 = 7200
