Search over 10,000 free study notes

Lets number the equations: 1) 3x + 2y = 17 2) 4x - y = 30If we double equation 2) we will get matching y coefficients so:8x - 2y = 60 if we rearrange this to be 8x-60 = 2y Then if we put these together: 3...

The first aim is to obtain an expression for one of the unknowns in terms of the other. To achieve this, addition and subtraction methods are used. For example, using equation 1, subtracting 2y from both ...

A mon avis, il y a beaucoup de choses que nous pouvons faire pour améliorer cette situation grave. Par exemple, les gens peuvent décider de faire un covoiturage aves ses amies. C’est une manière géniale d...

(x+6)^{^2}-36+4=0(x+6)^{^2}-32=0(x+6)^{^2}=32(x+6)=±√32x=-6±√32

The conditional mood is used to describe what could, should or would have happened, in a certain situation. The conditional is used frequently to form Si Clauses, ("if" clauses), and is used as ...