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A* grade question: ((2x+3)/(x-4))-((2x-8)/(2x+1))=1 solve for X

Multiply whole equation by x-4 and then 2x+1 (would do this one step at a time but must conserve space here):

(2x+3)(2x+1)-(2x-8)(x-4)=(x-4)(2x+1)

Expand brackets:

(4x^2+8x+3)-(2x^2-1...

Answered by Becky L. • Maths tutor

4416 Views

A plant community on an extinct volcano displays the process of succession. Explain why there would be very few species at the end of the eruptive life cycle of the volcano and why rate of new species introduction would rapidly increase afterwards.

The initial environment would be a harsh/hostile environment which few species would be adapted to. The volcanic rock would have to be broken down to form humus, only a little or none would have been avai...

Answered by Nehemie M. • Biology tutor

3112 Views

What is a nerve synapse and how does it work?

What is a nerve synapse?

A synapse refers to the junction between two neurons. When an impulse (action potential) reaches the end of a neuron (the pre-synaptic neuron), the synapse allows this sign...

Answered by Jamie H. • Biology tutor

7914 Views

Why do markets fail?

In competitive markets, the free market mechanism is in most cases the most efficient. However sometimes, these markets fail indicating a requirement for government intervention. The most famous example i...

Answered by Callum S. • Economics tutor

3065 Views