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Solve by factorisation. 3x^2 + 11x – 20 = 0

Factorisation is a skill learned through a lot of practise. For questions with a coefficient of x, I like to use the 'House Method'.Step 1 - multiply the coefficient of x 2 with the constant. =3*(-20)=-60Ste...
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Answered by Peter P. • Maths tutor
8681 Views

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 ...
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Answered by Peter P. • Maths tutor
9264 Views

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...
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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...
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Answered by Ellen C. • History tutor
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Using Shelly’s ‘Frankenstein’ explore the relationships between creators and creations.

The monster can be viewed as Viktor’s alter ego, yet the monster is a ‘blot upon the earth’ implying that having an alter ego is a wrong-doing in itself. A mistake in man is a mistake made within God since ‘...
Answered by • English tutor
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