Quick questions on The discriminant: number and nature of the roots - SQA National 5 Maths

3short 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

x^2 + 6x + 5 = 0

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

What is q2?

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State the nature of the roots of

x^2 - 2x + 5 = 0

. [2 marks]

What is q3?

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Find

k

x^2 + kx + 16 = 0

has equal roots. [3 marks]

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