2 * 4^2 - 0.5 * (-2) + 6 = 2 * 16 + 1 + 6 = 32 + 1 + 6 = 39
Y=(x⁴-3)(x²+2)=x⁶-3x²+2x⁴-6
y`=(x⁶-3x²+2x⁴-6)`=6x⁵-6x+8x³=2x*(3x⁴+4x³.-3)
4 ^ 24 - 4 ^ 21 = 4 ^ 21 * ( 4 ^ 3 - 1 ) = 4 ^ 21 * 63
126 = 63 * 2
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( 4 ^ 21 * 63 ) / ( 63 * 2 ) = ( 4 ^ 21 ) / 2 = ( 2 ^ 42 ) / 2 = 2 ^ 41