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How do you factorise a quadratic expression using the formula

To factorise an expression of the formax2+bx+c We use the formulaX=(-b+/- (b^2-4ac)^(1/2))/2aExample:Factorise 3X2+2X+-1So here a=3 b=2 c=-1From the formula we get X=1/3 and X=-1And ...

KS
Answered by Kaitrin S. Maths tutor
2750 Views

Describe the mechanics of breathing for inspiration during exercise. (5)

During exercise the mechanics of breathing for inspiration is different from that during rest. The diaphragm and external intercostal muscles along with additional muscles like the pectoralis minor contra...

TH
10817 Views

Explain how different landforms may be created by the transport and deposition of sediment along the coast

Long Shore Drift is responsible for the creation of the majority of coastal sedimentary landforms. Eroded material, ranging in size from fine sand to larger pebbles and cobbles, are transported in three w...

HW
Answered by Harry W. Geography tutor
12342 Views

To what extent can psychology be considered a science? (8 marks)

To formulate an answer to this question requires some thought into what actually constitutes a science. Science requires the standardisation of procedures when conducting a study, in order to control for ...

MS
9730 Views

solve for x, in the form x = loga/logb for 2^(4x - 1) = 3^(5-2x) (taken from OCR June 2014 C2)

We can take logs of both sides straight away, and using the log rule that alogb = log(b^a)So(4x-1) log(2) = (5 - 2x) log(3)We can expand the bracketsso (4x)log(2) - log(2) = 5log(3) - 2xlog(3)We can group...

EN
Answered by Ellie N. Maths tutor
8042 Views

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