Question

Solve the polynomial by completing the square. Show all steps of your work.
`x^2 - 2x - 63 =0`

Answer 1

Answer: x = -9 and x= 7

Step-by-step explanation: By using completing the square method

= x² - 2x-63

= x² -7x+9x -63

= x(x-7)+ 9(x-7)

= (x+9) (x-7)

= x = -9 and x= 7

Answer 2

Explanation:

x^2-2x-63=0

x^2-x(9-7)-63=0

x^2-9x+7x-63=0

x(x-9)+7(x-9)=0

(x+7)(x-9)=0

x=-7

x=9