What number must be added to the expression below to complete the square x^2+7x

Step-by-step explanation:

Given

x² + 7x

To complete the square

add ( half the coefficient of the x- term )²

x² + 2( )x + ( )²

= x² + 7x +

= (x + )² ← perfect square

x/7.50 = 15

x= 7.50 / 15 divide

step-by-step explanation:

no

step-by-step explanation:

2-7=-5

7-2=5

when you combing like terms for ech expression, 5 and -5. these numbers are not equal to each other.