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x^{2}-4x-3 First factorise into squared form and expand.(x-2)^{2}=x^{2}-4x+4Balance the equations.x^{2}-4x+4 needs to be x^{2}-4x-3This leads to(x-2)^{2}-4-3 to get rid of the +4 from factorising.Leaving finally(x-2)^{2}-7As an extension could ask the student about minimum value of the curve

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Have a Free Meeting with one of our hand picked tutors from the UK’s top universities

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