SOLUTION: Show, using a numerical example, that the expressions (x+2)^2 and x^2+4 are not equivalent.

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Question 1013737: Show, using a numerical example, that the expressions (x+2)^2 and x^2+4 are not equivalent.

Answer by ikleyn(52787) About Me  (Show Source):
You can put this solution on YOUR website!
.
OK,
substitute x = 1 in each expression and compare.

%281+%2B+2%29%5E2 = 3%5E2 = 9.

1%5E2+%2B+2 = 1+%2B+2 = 3.

Are these the same?