Question

(x-6)^2=81. can someone help me solve this please.

Answer 1

x^2 - 12x + 36 = 81
x^2 - 12x = 45
Now you can solve it using formula for quadratic equation.

Answer 2

this is what i have so far \[x-6=\sqrt{81} = x-6=9\]

Answer 3

almost tena, just remember if you "force" a square root you need the ± of the number

Answer 4

is it -3,-15

Answer 5

x−6=9
x−6=-9

x = 15
x = -3

Answer 6

see i cant find that symbol using the mathlab..oh wow look i was almost right!!! lol

Answer 7

you have no clue how long i have been working on this math.. i dont understand NONE of it

Answer 8

On a mac to get that symbol you hold "alt shift +" and it makes the ±
On the other note you had most of the right procedure, the only thing you missed was that √81 = ±9

Answer 9

oh im not on a mac but ill try and see what it does on mine. nope it dont work lol