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.
Since there are only terms in x2 and constants, but none in x, completing the square is not an option! x2 - 14 = 7 x2 = 21 and so x2 = sqrt(21)
It is an equation with no real solutions - only complex ones. x2 + 302 = 162 x2 + 900 = 256 x2 = -644 So x = ±25.38*i, where i is the imaginary square root of -1.
Let's call x the unknown side of the square. Using Pythagoras's theorem: x2+x2 = 322 x2+x2 = 1024 2x2 = 1024 x2 = 512 x = 22.627417 feet So the square has 4 sides of 22.627417 feet Perimeter = 4*22.627417 = 90.50966799 feet
x2-10 = 0 x2 = 10 x = the square root of 10
square root of (x2 + 1) = no simplification (square root of x2) + 1 = x + 1
x2 square root of x is an expression, not an equation or inequality. It, therefore, has no answer.
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.
Since there are only terms in x2 and constants, but none in x, completing the square is not an option! x2 - 14 = 7 x2 = 21 and so x2 = sqrt(21)
It is an equation with no real solutions - only complex ones. x2 + 302 = 162 x2 + 900 = 256 x2 = -644 So x = ±25.38*i, where i is the imaginary square root of -1.
Let's call x the unknown side of the square. Using Pythagoras's theorem: x2+x2 = 322 x2+x2 = 1024 2x2 = 1024 x2 = 512 x = 22.627417 feet So the square has 4 sides of 22.627417 feet Perimeter = 4*22.627417 = 90.50966799 feet
x2 actually has two square roots. One of them is indeed x. The other one is negative x.
x2-10 = 0 x2 = 10 x = the square root of 10
if you mean X²+8X-5=0: X1=-8/2 - Square root of ((8/2)²+5) X1=-4 - Square root of 21 X1 is about -8.58 X2=-8/2 + Square root of ((8/2)²+5) X2=-4 + Square root of 21 X2 is about 0.58
No.
x2
A perfect square is any bionomial that can be written as (x+y)2. X2 can be written as (x+0)2 so it is a perfect square