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7(x + 2)

It is possible to solve this using equations for projectile motion that can be found in the majority of formula booklets. However, since they are not always available, it is good to understand where they ...

A Nash equilibrium is a common solution concept used in game theory for non-cooperative (i.e. players cannot work together or communicate), 2+ player games where given all other players' strategy choices,...

Stalin's aims for the USSR before the second World War are commonly seen as wanting to industrialise the nation, re-arm in case of a future war, and rid society of kulaks (richer peasants) as to be able t...

7x+y=1 (1)  ->   y= 2x² - 3 (3)

7x + 2x² -3-1=0 -> (2x-1)(x+4)=0 so 2x-1=0 so 2x=1 so x=0.5 and x+4=0 so x=-4

7(0.5)+y=1 so y=1-3.5 so y=-2.5 and 7(-4) +y=1 so -2...