1ii) sketch y=x^2-4x-21

A parabola shape with x intercepts at x = -3 and x = 7 and the y intercept at y = -21

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Answered by Kishwar I. Maths tutor

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How do I factorise a quadratic equation?


-3<n<1 n is an integer, write down all the possible values of n.


Complete the square and hence sketch the graph of f(x) = x^2 + 2x + 7


Expand and simplify: 5(x + 3) - 3(y - 2)


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