exam Maths Puzzle Numerical Ability

How do i calculate the value of the discriminant of x^2+x+3=0

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exam Other Question

Dividing Polynomials : synthetic division


x^4 - 6x^3 + 2x - 4 divided by x -3


please help me if you can
Identify the axis of symmetry, create a suitable
table of values, and sketch the graph (including the axis of symmetry.
Another one im stuck on. grrr
y = -x^2+6x-2