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Restrangeti
a.x²+2×x×√7 +√7 in paranteza²=
b.x²-2×x×2√3 in paranteza mica+2√3 in paranteza mica la²=
c.x²-2×x×√6 in paranteza mica +6=
d.x²-2√3x+3=


Răspuns :

a.x²+2×x×√7 +(√7)²=(x+√7)²
b.x²-2×x×2√3+(2√3)²=(x-2√2)²
c.x²-2×x×√6 +6=(x-√6)²
d.x²-2√3x+3=(x-√3)²