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16*3*y²+2*4√3*y*√12+12=
48y²+8√36y+12=
48y²+48y+12=
4y²+4y+1
(a² + 2b³)² =
a⁴+2*a²*2b³+4b⁶=
a⁴+4a²b³+4b⁶