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Solve 8^x + 4 = 4^x + 2^(x+2).

Firstly, we want to notice that this question only involves powers of 2^x, ie.
(2^x)^3 + 4 = (2^x)^2 + 4(2^x)
so we can use the substitution u = 2^x to give
u^3 - u^2 - 4u + 4 = 0
The...

SA
Answered by Sachin A. MAT tutor
1442 Views

Heutzutage sind die Kinder für die jungen Familien keine Priorität mehr. Warum ist es so?

Einerseits leben wir in einer stark industrialisierten Welt, wo jeder seine eigenen Berufsziele verwirklichen könne. Die Frauen werden immer unabhängiger und brauchen keine Unterstützung z.B. von den Männ...

NB
Answered by Nadezhda B. German tutor
1233 Views

What is the difference in Greek between "κλείνω" and "κλίνω"?

These verbs sound the same, but they don't mean the same. "Κλείνω" means "to close" and it can be used in different contexts. For instance, we say &qu...

GG
3921 Views

Describe the process of ventilation in humans. (4 marks)

During inhalation, the intercostal muscles contract causing the rib cage to move up and out. The diaphragm also contracts and flattens. This causes the thorax to expand, increasing the volume and decreasi...

EC
Answered by Ella C. Biology tutor
3163 Views

How do I prepare for the HAT?

The HAT is not a paper to prove a universal understanding of all history but instead a chance to show how you can adapt fundamental skills of analysis to approach a topic that you will likely be unfamilia...

JB
Answered by James B. HAT tutor
1686 Views

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