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Which value of $x$ is a root of $x^{2} - 4 = 0$ ?

Class 10Standard Form and RootsQuadratic Equations

A $x = 1$
B $x = 2$
C $x = 3$
D $x = 4$

Step-by-Step Solution

x^{2} - 4 = 0

gives

x^{2} = 4

, so

x = 2

or

x = - 2

. Among the options

x = 2

is a root.

Answer: B)

x = 2

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