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Verified answer
Materi : Selisih KuadratRumus dasar :
a² - b² = (a + b)(a - b)
Pembahasan :
55² - 53²
= (55 + 53)(55 - 53)
= (108)(2)
= 216
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27² - 26²
= (27 + 26)(27 - 26)
= (53)(1)
= 53
————————————————
76² - 73²
= (76 + 73)(76 - 73)
= (149)(3)
= 447
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49² - 47²
= (49 + 47)(49 - 47)
= (96)(2)
= 192