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f ( x ) = 2 x ^3 − 5 x ^2 + ax + a. Given that (x + 2) is a factor of f ( x ), find the value of the constant a. (3 marker)

If x+2 is definitely a factor, that means when we sub x=-2 in, we should get 0 at the end. So 2(-2)^3 - 5(-2)^2 + a(-2) + a = 0So -16 -20= aso a = -36

Answered by Maths tutor
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Use the quadratic formula to find the solutions to x^2+2x-35=0

x=5 and x=7

GN
Answered by Georgia N. Maths tutor
5937 Views

What are the key stages in phagocytosis?

First, the phagocyte (a specialised type of white blood cell) will recognise the pathogen by a process called chemoattraction -- this is essentially where the phagocyte 'follows' a chemic...

Answered by Biology tutor
2213 Views

How does Shakespeare depict theatre and the acting craft across his works?

Hamlet is the most prominent example of direct commentary on theatre in Shakespeare’s time. The play within the play is used to convict King Claudius of the murder of his brother. ‘The play’s the thing wh...

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How can my essays be structured so that I can bridge the gap between a solid A and an A*?

English literature tends to be one of the more ubiquitous subjects, but is nonetheless harder to get a solid grip on how to really stand out - making points and analysing texts in a way that really set a ...

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