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Exponentials and logarithms
Paper 1 · Exponentials and logarithms
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What is the sum of all real solutions of
9
x
−
4
×
3
x
+
1
+
27
=
0
9^x - 4 \times 3^{x+1} + 27 = 0
9
x
−
4
×
3
x
+
1
+
27
=
0
?
A
1
1
1
B
2
2
2
C
3
3
3
D
9
9
9
E
12
12
12
Hint
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