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Completing the square is a method that can be used to solve the quadratic equation x^2+6x+14 in the form of (x+a)^2+b. The way we find a and b is as follows:For co...

Previous exposure to the toxin confers immunity by eliciting an immune response whereby b-cells differentiate into plasma cells allowing the production of antibodies. These will in turn stimulate producti...

Factorising takes the form of (x+a)(x+b) where in this case: a+b = 4 anda*b=4this is taken from the original equations coefficient to x and the constant value.factorising gives (x+2)(x+2) which is ...

Unfortunately, there is no easy rule to known when to use 'para' and when to use 'por' - you just have to memorise the different situations in which they apply. These are the key scenarios/circumstances w...

SingularNominative - puellaVocative - puellaAccusative - puellam Genitive - puellaeDative - puellaeAblative - puellaPluralNominative - puellaeVocative - puellaeAccusative - puellasGenitive - puellarumDati...