Question: Negate the statements. (a) If two triangles are similar, their sides are equal. (b) There exists a real number x such that x2 = 5.

Negate the statements.
(a) If two triangles are similar, their sides are equal.
(b) There exists a real number x such that x2 = 5.
(c) For every positive integer n, if n is even, then n2 is even also.
(d) There exists a real number x such that x2 + 4 = 0?

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