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WAEC Further Mathematics 2019 Paper

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Question : 1

Total: 39

Solve: 8

^{x - 2}

^{3x}

-2
-1
1
2

Solution:

8 $^{x - 2}$ = 4 $^{3x}$

2 $^{3(x - 2)}$ = 2 $^{2(3x)}$

2 $^{3x - 4}$ = 2 $^{6x}$

2 $^{x - 4}$ = 6 $^x$

$\; \frac{-4x}{-4}$ = $\; \frac{4}{-4}$

x = -1

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