Question

x^2-18X=10 solve by completing the square

Answer 1

use commas or radicals if necessary

Answer 2

decimals?

Answer 3

To complete the square take the middle term half it then square it

Answer 4

Half of -18x is -9 square is 81
x^2 -18x+81=10+81

Answer 5

± what is this symbol

Answer 6

+ve & -ve.
this means that there will be 2 answers.

Answer 7

It means + or - both.

Answer 8

can this answer be in radical form as well?

Answer 9

it means that for x you will get two values
for completing the square first add square of half the coefficient of x to both sides
x² - 18x + 9² = 10 + 9²
LHS becomes (x - 9)²
so
(x - 9)² = 91
taking squareroot of both sides
x - 9 = root(91)
x - 9 = ± root(91)
so
x = 9 + root(91)
and
x = 9 - root(91)

Answer 10

\[x = 9 + \sqrt{91}\]
and
\[x = 9 - \sqrt{91}\]

Answer 11

got it panther???

Answer 12

ok ty