... Gi s -16 SQRT(16) = 4 SQRT(A2) = #NUM! SQRT(ABS(A2)) = 4 c hai ca mt s i Pi (= 3. 141 59265358979) = SQRTPI(number) ... a ch tham chin mun thc hi Trong Excel 2010, b n 2 54 ref (vi Excel 2003 tr v 29) Bao g ... st mng, mt tham chin mt a s, v.v : SUMSQ(3, 4) = (3^2) + (4^ 2) = 9 + 16 = 25 ng c liu, ct gng...