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A)Write x^2 – 8x + 25 in the form (x – a)^ 2 + b. (B) Write down the coordinates of the turning point of the graph of y = x2 – 8x + 25. (C)Hence describe the single transformation which maps the graph of y = x2 onto the graph of y = x2 – 8x + 25.

This is a question about completing the square of a quadratic equation. This is used to find the minimum point on a parabolic graph. A) Step 1 - set up the '(x – a) 2 ' term by dividing the coefficient of x ...
PP
Answered by Peter P. • Maths tutor
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Find the value of X when 3x^2 + 6x + 3 = 0

Firstly we can see that this equation can be simplified. They are all divisible by 3 so this means we can simplify it to x^2 + 2x + 1 =0 Now we need to find what times together equals 1 but when added togeth...
AJ
Answered by Alby J. • Maths tutor
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Explain why there was an increase in witchcraft accusations in the early modern period

Ensure that each of your points within your answer is clearly and concisely linking back to the question. For example:"One important event of the early modern period was the Witchcraft Act of 1604. This...
EC
Answered by Ellen C. • History tutor
7879 Views

Solve: 2((x)^2) + 7x + 3, for x

First factorise the quadratic: (2x + 1)(x + 3). Next set the factorised equation to 0: (2x + 1)(x + 3) = 0. Then solve the equation to find the 2 values of x, dividing through one bracket at a time: First di...
OH
Answered by Olivia H. • Maths tutor
3236 Views

Describe the different forms of active transport across a biological membrane

Active transport is the movement of solutes, either ions or molecules, across a membrane up their concentration gradient (from low to high concentrations). The process requires a carrier protein which is emb...
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Answered by Olivia H. • Biology tutor
3157 Views