A portion of the Quadratic Formula proof is shown. Fill in the missing reason
Statements
Reasons
ax2+bx+c 0
Given
ax? + bx-c
Subtract c from both sides of the equation
С
***Ex-
Divide both sides of the equation by a
a
b
b
x2
X +
+
Complete the square and add
b
2a
to both sides
a
2a
2a
b
x2
X +
c b?
a 4a?
Square
b
2a
on the right side of the equation
а
2a
2
x?
+
X +
b
2a
4ac
4a
+
b?
4a?
?
Find a common denominator on the right side of the equation
Square the right side of the equation
Take the square root of the right side of the equation
Multiply the right side of the equation by a
I believe it is the first option, as you can see that, on the right hand side, 4a was multiplied to the first term to make a common denominator. I'm sorry if it is wrong, and I hope this helped.
