The value range of the letter in the algebraic formula y = x + 1 / 3-2x is____ Square of (- 2 radical 3)=

Denominator x + 1 ≠ 0
x≠-1
Under the root sign, 3-2x ≥ 0
x≤3/2
So x ≤ 3 / 2 and X ≠ - 1
（-2√3)²
=(-2)²×(√3)²
=4×3
=12

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