JAMB 2017 · UTME (set 2) · Q17

Indices & standard form

The value of $x + x(x^x)$ when $x = 2$ is

Worked solution (try it first)

Work out the power first: $x^x = 2^2 = 4$ .
Then multiply: $x(x^x) = 2 \times 4 = 8$ .
Finally add: $2 + 8 = 10$ , option B.

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