Quick questions on Polynomials and quadratics: the discriminant and factor theorem - SQA Higher Maths

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?

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Find the discriminant of

2x^2 - 4x + 5

and state the nature of the roots. [2 marks]

What is q2?

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Show that

(x + 2)

is a factor of

x^3 + 3x^2 - 4

. [2 marks]

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