Question

(x+5)^2=10
what are the solutions for this equation?

Answer 1

x = -5 + sqrt(10) or -5 - sqrt(10)

Answer 2

-5 + sqrt(10) or -5 - sqrt(10), this is because the square root is a a number which multiplied by itself yeilds that number. for 10, it is two positive or two negative numbers which square to 10

Answer 3

get rid of the +5: -5

and then +-sqrt(10) will fit ...

-5 +- sqrt(10)

Answer 4

there are two answers correct?

Answer 5

Yes indeedy.

Answer 6

here can you help me on this one x2 - 8x + 16 = 11

Answer 7

x^2 - 8x +5 = 0
have you learned the quadratic formula? a=1, b=-8, c=5 ...

Answer 8

not exactly

Answer 9

x = ( - b plus-or-minus sqrt(b^2-4ac) ) / 2a ... sound familiar?

Answer 10

ha. I'm telling you now i didn't learn this. i glanced over a few things on the internet but i kept getting it wrong :I

Answer 11

if you haven't you can easily derive it, just complete the square