Question

6. Calculati folosind formulele de calcul prescurtat:
a) (√2-1) ^2+rad8-6rad3+(3+rad3)^2-(15-2)^2-2rad60​

Answer 1

Răspuns:

√2^2-2×√2×1+1^2+2√2-6√3+3^2+2×3×√3+√3^2-15^2-2×15×2+2^2-4√15=2-2√2+1+2√2-6√3+9+6√3+3-225-60+4-4√15=-266