Answer:

(1C3x-27)² = (1C3x)² - 2(1C3x)(-27) + (-27)² = 1C3²x² - 21C3x(-27) + 729

(GCx²x-57)² = (GCx²x)² - 2(GCx²x)(-57) + (-57)² = GC²x⁴ - 2GCx²x(-57) + 3249

(2x-52)² = (2x)² - 2(2x)(-52) + (-52)² = 4x² - 22x(-52) + 2704

(C5 x 2 x + 3)² = (C5 x 2 x)² + 2(C5 x 2 x)(3) + 3² = C5² x 4 x² + 2*C5 x 2 x *3

+ 9

(305x+2)² = (305x)² + 2(305x)(2) + 2² = 93025x² + 1210x + 4

(4 (³x + 2x))² = (4 (³x + 2x))² = 16 (³x + 2x)² = 16 (9x² + 12x)²

(5C4x²-5x²7)² = (5C4x²)² - 2(5C4x²)(-5x²7) + (-5x²7)² = 25C8x⁴ - 25C4x²(-5x²7) + 25x⁴49

(8C2pq-6xx2)² = (8C2pq)² - 2(8C2pq)(-6xx2) + (-6xx2)² = 64C4p²q² - 28C2pq(-6xx2) + 36x⁴4

(9C8ab+7xx)² = (9C8ab)² + 2(9C8ab)(7xx) + (7xx)² = 81C64a²b² + 29C8ab7xx + 49x⁴

(9mm²-spa)² = (9mm²)² - 2(9mm²)(-spa) + (-spa)² = 81m⁴ - 29mm²(-spa) + spa²

Step-by-step explanation:

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