exam Maths Puzzle Numerical Ability

Determine the equation of the axis of symmetry for the parabola whose x - intercepts are (-3, 0) and (1,0).

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exam Other Question

p.186
Factor:
(a+b)^6 - (a-b)^6
The length of the base of an isosceles triangle is 2 centimemters shorter than the length of either of the other sides. If the perimeter of the triangle is 16 centimeters, find the length of each side of the triangle.