30² - Sa+ 4) - (40 - 100 +11)
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Step-by-step explanation:
62 = 36
72 = 49
92 = 81
132 = 169
252 = 625
302 = 900
102 = 100
Hence, 36, 49, 81, 169, 625, 900 and 100 are perfect squares.
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