A square root.
The answer is 0.
plus or minus. You see it often with square roots. The square root of 9 is plus or minus 3.
Plus or minus 3i.
plus or minus 27
plus or minus 21
Plus or minus 7.
plus or minus 33
X2+5x-6. a=1, b=5, and c=-6 The formula is: -b plus or minus the square root of b squared minus 4ac all over 2a. -b+square root of b2-4ac ---- 2a -5 plus or minus the square root of 5 squared minus 4(1)(-6) -5 plus or minus the square root of 25-4(-6) -5 plus or minus the square root of 25+24 -5 plus or minus the square root of 49 -5 plus or minus 7 Here is where you split into two different answers: Number 1: -5 plus 7= 2 Number 2: -5 minus 7= -12 Your answer is X=2, -12
there is no real square root of a minus number (think about it, minus x minus = plus, plus x plus=plus, and you can't have a minus x plus if it's a square root). However, there is an imaginary root which is "1/2i", where "i" represents the square root of -1. This number doesn't actually "exist" as such, it is just a theory which makes doing maths easier. However if you're not familiar with the concept of "i", you're probably not meant to end up with a minus square root (anything below A level further maths you don't usually need "i") . Check your calculations again.
x plus the square root of 2
It is not defined which level of root. Assume it is the square root. It is 18.
plus or minus 6
square root -5 minus 14 or - square root -5 minus 14
Plus or minus the base. If the base is X and you square it, you get X2. If you take the square root of that, you get Plus or Minus X. This is because X*X equals X2 and -X*-X also equals X2.
The square root of minus 8 is equal to the square root of 8 times the square root of minus 1, or 2.8284i.
[ 2 minus square root of 5 ] is the only one.
Since infinity is not a defined number, it is impossible to have a square root of it. its infinity!
The square roots of 19 are plus and minus 4.3589 (rounded)
if x^2 = 49, then the square root property says you can take the square root of both sides as long as you make one a plus-minus. x^2 = 49, which means square root of x^2 = plus minus the square root of 49 the square root of 49 is 7, so +- 7. We get: x = plus/minus 7 (this means either positive 7 or negative 7)
plus (+) 70 and minus (-) 70
sqrt(800) + sqrt(50) - sqrt(18) = 31.113 approximately.