railway RRB JE (CBT I + CBT II) Mock Test 2024 Quantitative Aptitude Algebra Identities

जर a + b = 20 आणि ab = 15 असेल, तर (a – b)2 चे मूल्य ______ च्या बरोबरीचे आहे.

1
240 
2
340
3
740
4
440
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