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co w tym trudnego gdy masz a i b dane??
3(-5+3)²=3(-2)²=3*4=12
a = -5
b = 3
3a² + 6ab + 3b²
3 x 25 + 6 x -5 x 3 + 3 x 9 = 75 - 90 + 27 = 12
3 * ( -5 + 3 )² = 3* (25 + -30 + 9) = 75 - 90 + 27 = 12
:)