WAEC - Mathematics (2007 - No. 24)
Simplify \(\frac{3x^3}{(3x)^3}\)
1
\(\frac{1}{3}\)
\(\frac{1}{9}\)
\(\frac{1}{27}\)
คำอธิบาย
\(\frac{3x^3}{(3x)^3}\) = \(\frac{3 \times x^3}{3^3 \times x^3}\)
= \(\frac{3 \times x^3}{3 \times 3 \times 3 \times x^3}\)
= \(\frac{1}{3^2}\)
= \(\frac{1}{9}\)
= \(\frac{3 \times x^3}{3 \times 3 \times 3 \times x^3}\)
= \(\frac{1}{3^2}\)
= \(\frac{1}{9}\)