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的 is a character that implies possession, but can also be used with disyllabic adjectives (adjectives that are two characters long.) For example: 红花 = red flower. 的 is not needed here because the word for...

Measure words are characters that are used when describing how many there are of a certain object.       E.g. if you want to say 'five books', you have to say ‘五本书 not ‘五书’. Therefore, 本 (the measure word...

To "make y the subject" basically means to get an expression in the form y= a function of the other variables (in this question, x and p). This will involve adding, subtracting, multiplying and ...

Let us use the example of (x + 3)(x + 5)

The main thing we have to remember is to multiply every term in the first bracket by every term in the second bracket. An easy way to make sure we've done t...

x² + 8x + 16