Top answers

When do you use 'avoir' and 'être' for past tenses?

In the French perfect tense, avoir and être are both used as auxiliary, or helping, verbs, like have in I have eaten in English. They are placed before the verb which shows meaning: j' ai mangé or il est all...
LW
Answered by Lewis W. • French tutor
13937 Views

When do you use an accent in Spanish?

There are two ways accents are used in Spanish. To show unusual emphasis. When a word ends in a vowel, n or s , the emphasis falls on the second-to-last syllable, unless there is an accent on another syllabl...
LW
Answered by Lewis W. • Spanish tutor
2872 Views

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...
FY
Answered by Farhin Y. • Maths tutor
6214 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...
FY
Answered by Farhin Y. • Chemistry tutor
7033 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 ...
SP
Answered by Sachin P. • Maths tutor
3906 Views