We want to determine whether $x=-1$x=−1 is a solution to the equation $\left(x-4\right)^2=25$(x−4)2=25, by using substitution.
Substitute $x=-1$x=−1 into the expression $\left(x-4\right)^2$(x−4)2:
Is $x=-1$x=−1 a solution to the equation $\left(x-4\right)^2=25$(x−4)2=25?
Form and solve linear equations and inequations, quadratic and simple exponential equations, and simultaneous equations with two unknowns
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