exam Maths Puzzle Numerical Ability

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49x^2-4

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Please help: Let f(x) = x^2 + 2x-5 and g(x) = x^2 + x. Find (f + g)(x) (writing linear equations in point slope form)
write the point-slope form of an wquation of the line that passes through each pair of points.

(-1,-7),(1,3)