Question

X2+7x-6=0 by completing the square

Answer 1

Answer:

formula- (b/2)^2 = (7/2)^2 = 49/4. x = 7/2 + root 73/2 and x = 7/2 - root 73/2. Hope this helps!

Step-by-step explanation:

Answer 2

Given :

x² + 7x - 6 = 0

x² - 7x = 6

Take the coefficient of x and divide by 2. The formula is (b/2)² = (7/2)² = 49/4.

Add 49/4 to both sides of equation.

x² - 7x + (49/4) = 6 + 49/4

x² - 7x + (49/4) = 73/4

(x - 7/2)² = 73/4

x - 7/2 = √73/4

x = 7/2 + √73/4

x = 7/2 - √73/4

Or

x = 7/2 + √73/2

and

x = 7/2 - √73/2.