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(2x+3) (2x+1) = 4x^2 + 8x + 3
(2x-8) (x-4) = 2x^2 - 16x - 32
(4x^2+8x+3) - (2x^2-16x-32) = 1
2x^2 - 8x - 29 = 1
2x^2 - 8x - 30 = 0
x^2 - 4x - 15 = 0
Using the qua...
Reasons why it should be left to market forces: • competition in the provision of education can increase choice. Different types of education may be provided => profit motive could make more educationa...
Number conversions are a staple of both A-Level and GCSE computing papers. a) Expressing as a binary number is the hardest part of a conversion. Octal and hexadecimal can all come after e...
This is a simple yet standard GCSE question, especially in non-calculator papers. The solution is simple: if the student is picked at random, then the probability 2/5 must represent a ratio where the othe...
a) Given two coordinate pairs (x1, y1) and (x2, y2) you can work out the distance AB as sqrt((x1-x2)2+(y1-y2)AMAnswered by Adam M. • ICT tutor1965 Views
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