Question

Solve the quadratic equation by completing the square.

x^2-18x+78=0
first, choose the appropriate form and fill in the blanks with the correct numbers.
a.) (x+?)^2=?
or
b.) (x-?)^2=?

then, solve the equation.
x=?

Answer 1

Exact Form:

x

=

9

±

√

3

Decimal Form:

x

=

10.73205080

,

7.26794919