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How do I find the expression for the nth term in a series of numbers?

First write down the series of numbers e.g. 8, 12, 16, 20. Calculate the difference between each term in the series 12-8 = 4, 16-12 = 4, 20-16 = 4 This shows that the expression will begin with 4n as the dif...
MB
Answered by Megan B. • Maths tutor
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Why should we use biodiesel rather than regular petroleum diesel?

The combustion of biodiesel produces less carbon dioxide, sulfur dioxide and particulates than that of regular diesel. This causes less global warming from the greenhuse effect and less sulfur dioxide pollut...
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Answered by Bradley M. • Chemistry tutor
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Factorise and solve x^2 - 8x + 15 = 0.

Whenever faced with a quadratic equation in the form of AX^2 + BX + C = 0, the first thing you do is factorise it, which will look something like this: (X )(X ) = 0.You can see from this that when you multip...
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Answered by Zarmala N. • Maths tutor
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Which of the basic life processes is described here? The ability of multicellular organisms to regulate their internal environment so that it stays optimum for cellular survival.

Homeostasis
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Answered by Alice M. • Biology tutor
3366 Views

Expand (x-5)(2x-3)

(x-5)(2x-3)= 2x 2 -3x-10x+15 = 2x 2 -13x + 15
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Answered by Sharone S. • Maths tutor
5721 Views