book Maths Puzzle Numerical Ability

reduce to lowest terms: 2x^2 - 3x - 2
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10 + x - 3x^2

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book Other Question

Graph this system of inequalities. Name the coordinates of the verics of the feasible region. Find the maximum and minimum values of the given function.

y >= 2
1 =< x =< 5
y =< x + 3
f(x,y) = 3x-2y
what do the symbols stand for which look like an exclamation point! ? and what do the symbol stand for which is a M flipped sideways almost like a backwards E?