Simplify 3−5n91−n×27n+1

Assessment: JAMB UTME - Mathematics - 2013 Subject: General Mathematics

Question 1 Report

Simplify $\frac{3^{- 5 n}}{9^{1 - n}} \times 27^{n + 1}$

32

33

35

3

Answer Details

$\frac{3^{- 5 n}}{9^{1 - n}} \times 27^{n + 1}$
$\frac{3^{- 5 n}}{3^{2 (1 - n)}} \times 3^{3 (n + 1)}$
$3^{- 5 n} \div 3^{2 (1 - n)} \times 3^{3 (n + 1)}$

$3^{- 5 n - 2 (1 - n) + 3 (n + 1)}$

$3^{- 5 n - 2 + 2 n + 3 n + 3}$
$3^{- 5 n + 5 n + 3 - 2}$
$3^{1}$
= 3

Read lesson note on Representation Of Data (JAMB)

Read lesson note on Solution Of Linear Equations (WAEC)

Read lesson note on Algebraic Expressions (WAEC)

Representation Of Data

Solution Of Linear Equations

Algebraic Expressions

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