Q. Solve for all real values of x.x2−1=0Answer: x=
Set up the equation: Set up the equation.We have the equation x2−1=0.To solve for x, we need to find the values that make this equation true.
Factor the left side: Factor the left side of the equation.The left side of the equation is a difference of squares, which can be factored into (x+1)(x−1).So, x2−1=(x+1)(x−1).
Set each factor equal: Set each factor equal to zero.Since the product of the factors is zero, we can set each factor equal to zero to find the values of x.x+1=0 or x−1=0
Solve each equation for x: Solve each equation for x.For the first equation, x+1=0, we subtract 1 from both sides to get x=−1.For the second equation, x−1=0, we add 1 to both sides to get x=1.
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