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Using the quadratic formula with a calculator a=1 b=1 c=-90 answers are n=-10 and n=9Factorising (n-9)(n+10)=0 answers are n=-10 and n=9

Mon collège est petit mais très beau. J’aime la plupart des profs parce qu’ils sont gentils et parfois drôles. De plus, les cours sont très intéressants. Ma matière préférée est la technologie parce qu’on...

There are three kinds of nuclear radiation that you need to know for GCSE physics, and each is considerably different from the others. Firstly, alpha radiation: this is when a chunk of the nucleus is emit...

THREE

3a+2b = 178a-2b = 60We are going to solve this using the elimination method. This means that we are going to eliminate the variable (or letter) that has the same value in each equation. In this case it is...