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How could you sketch a graph for y=x^2-10x+21?

This is a quadratic equation. We can recall that this means the graph will have a parabolic shape. Next we need to do a little bit of manipulation to get our final bits of information. So we want to know whe...
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Answered by Farhin Y. • Maths tutor
6545 Views

What's the difference between covalent and ionic bonding?

So both are examples of very strong bonding. These are strong bonds that are difficult to break. With covalent bonds, the electron are shared between atoms whereas in ionic bonds the electrons are 'taken'. A...
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Answered by Farhin Y. • Chemistry tutor
7337 Views

How do you factorize a quadratic expression?

Firstly, your quadratic equation will be of the form ax 2 + bx + c where a, b and c will be numbers. Now you have to multiply a by c to get a number, say d. From this number d, you need to find 2 factors of ...
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Answered by Sachin P. • Maths tutor
4094 Views

Convert the hexadecimal value 'C3' into its binary equivalent.

To preform this conversion, we focus on each value individually, as they each represent a different 4-bit binary number. The binary system is of base 2, meaning the base is multiplied by 2 reading right to l...
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Answered by Cormac K. • Computing tutor
18656 Views

Can you explain how to divide mixed number fractions?

This is a super common question, and once you know which steps to take when, it is rather simple and just takes practise! First of all, these are the steps that you need to take: 1) Convert the mixed number ...
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Answered by Nicole B. • Maths tutor
3602 Views