Step-by-step explanation:
for example 4 is a perfect square because 2 x 2 = 4 and 169 is a perfect square = 13 x 13 =169 but 171 is not therefore,x²+2x+1 is a perfect square expression
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Step-by-step explanation:
for example 4 is a perfect square because 2 x 2 = 4 and 169 is a perfect square = 13 x 13 =169 but 171 is not therefore,x²+2x+1 is a perfect square expression