railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Algebra Identities

ଯଦି x4 + x2 y2 + y4 = 128 ଏବଂ x2 + y2 + xy = 16 ହୁଏ, ତେବେ x2 + y2 - xy ର ମୂଲ୍ୟ ନିର୍ଣ୍ଣୟ କର । 

1
-8
2
-16
3
128 
4
8 
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