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How do I solve a quadratic equation like x^2 - 2x - 35 = 0 without using a calculator?

If possible, you should try to factorise a quadratic. To do this, look a the factors of the constant, in this case -35. 35 is clearly divisible by 5, and 35 / 5 = 7, so 5 and 7 are one pair of factors. These...
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Answered by Alfie H. Maths tutor
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Outline the positive and negative effects of urban sprawl?

Define urban sprawl: urban sprawl is the outward growth of urban areas. As people move to urban areas the need for land to build on increases so the suburbs spread out.The positive effects are business owner...
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Answered by Ella G. Geography tutor
21165 Views

How does an electrical impulse travel from one neuron to the next (IB-SL 6.5)?

The arrival of an action potential at the synaptic knob opens calcium ion channels in the pre-synaptic membrane and Ca++ flow in from the synaptic cleft 2. Ca++ cause vesicles of neurotransmitters to fuse wi...
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Answered by Adam K. Biology tutor
2252 Views

explain the eigenvalue problem

The eigenvalue problem is how we can find non-trivial solutions where x does not equal zero to the matrix equation;AX=LX (L=lambda)Values of the scalar L for which non-trivial solutions exist are called eige...
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How would you write an essay about the use of different cinematic techniques in La Haine?

Writing a French a level essay is difficult because it tests both your knowledge of the set film or book (films are especially difficult as most students have never studied them before) and your ability to e...
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Answered by Gabriel J. French tutor
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