x^2-14x+49=13 will someone check my answer plzzzz

Question

anonymous · Answer

x=3,-8

anonymous · Answer

not if it is = 13

anonymous · Answer

but it all comes out to equalling 13

anonymous · Answer

perfectly

anonymous · Answer

Plug 3 into the equation first.
9 -42 + 49 should = 13
...but it doesn't so no wrong answer

anonymous · Answer

$$(x-7)^2=13$$
$$x-7=\pm\sqrt{13}$$
$$x=7\pm\sqrt{13}$$

anonymous · Answer

so two answers are 
$$7+\sqrt{13}$$ and 
$$7-\sqrt{13}$$

anonymous · Answer

Which software are you using SAT

anonymous · Answer

my brain on this one. lhs is perfect square

anonymous · Answer

the equation simplifies to x^2-14x+36,
now u see that there's  no exact integer solution. so 
use the formula (-b+-sqrt(b^2-4ac))/2a ... this equation gives the quadratic roots for the general equation ax^2+bx+c=0

anonymous · Answer

but at my disposal i have maple and of course worlfamalpha as it is on line

anonymous · Answer

Good answer but I like your notations thats what I meant

anonymous · Answer

but the point of this problem was to recognize the lhs as a perfect square

anonymous · Answer

Is maple free too?

anonymous · Answer

oh i am writing latex

anonymous · Answer

heck no!

anonymous · Answer

maple cost the earth

anonymous · Answer

i got it im posting 2 more ? that i need help on if anyone wants to help me

anonymous · Answer

gianfranco meet me and chat so as not to annoy chloebella. i will show you the latex if you like

anonymous · Answer

Ok that answers my questions. N ice typing though, well done :)

anonymous · Answer

Ok