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The expression is of the form ax^2 + bx + c. Here, a = 1 and this makes it easier for us. We can also see that b = 5 and c = 6. In general, we have to find two numbers that multiply to get c and add to ge...

Barium has more electrons shells than calcium, so the nuclear shielding is stronger, and the outmost electrons are further away from the nucleus. This results in a weaker attractive force between the elec...

I would ask the tutee for the past paper that they were struggling with and talk through the reading passage with them, identifying key words to help answer the questions. French is more ambiguous with th...

Te acabas de mudar a otra ciudad durante el verano. 

Describe como pare el colegio.

Describe tu clase y la gente que has conocido por el momento. 

Escribe que es lo que mas te gusta d...

The answer to this question will depend on the piece of music to which it applies, however there are several different textures which you must know for GCSE music:

Unison - this is where all singer...