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Solve the following equation by factorisation: x^2 - 2x -15 = 0

'No Nonsense' Answer: Our equation is x^2 - 2x - 15 = 0 so we want to find two numbers that add to get -2 and multiply to get - 15. The possible numbers pairs that multiply to get -15 are...1 and -15, -1 ...

TD
Answered by Tutor49235 D. Maths tutor
9640 Views

What is semi-conservative replication?

During DNA replication, the two DNA strands separate and each acts as a template (due to base pairing) for DNA polymerase to use to make the second strand of DNA. As a result, each new DNA molecule has on...

XW
Answered by Xanthe W. Biology tutor
10423 Views

A computer stores floating point numbers of size 1 byte, with 3 bits for the mantissa and 5 bits for the exponent. State what the effects would be on the stored numbers if instead 5 bits were used for the mantissa and 3 bits were used for the exponent.

By increasing the size of the mantissa, the accuracy of the stored numbers would increase. Decreasing the size of the exponent, however, would reduce the range of numbers that could be stored. The overall...

TD
5939 Views

What are some reasons for voting trends?

There are many reasons why people vote the way they do. A typical example is people voting a particular way because their parents vote a certain way and so people grow up in this environment and so just v...

BM
Answered by Ben M. Politics tutor
2947 Views

What are the defences to murder?

There are different defences to the crime of murder, each resulting in different outcomes. For example, there are the partial defences to murder: diminished responsibility, which exists under s.2 Homicide...

BM
Answered by Ben M. Law tutor
8379 Views

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