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f (3) = (3)² - (3) + 7
= 9 - 3 + 7
= 13

If we were to expand the brackets for this question we might be able to get to an answer however there is a much simpler way of solving the problem. As this question is made up of two expressions of x mul...

Es imposible cerrar los ojos ante la evidencia de cambios dramáticos en el clima. En efecto, las estadísticas muestran que las temperaturas globales subirán aún más en las próximas décadas. Se calcula que...

Proof by maths induction is a type of proof used in mathematical analysis to demonstrate that a certain expression or statement P(n) involving an arbitrary neutral number n is true for all n belonging to ...

The first thing to identify here is that this is a question about evolution. Students should look to give a comprehensive explanation of how organisms evolve via natural selection, while framing the answe...