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Quadratic Equations

Quick questions on The quadratic formula and the discriminant - Virginia SOL Algebra I

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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Solve x2+2x−8=0x^2 + 2x - 8 = 0 with the formula. [2 points]
What is q2?
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How many real solutions does a quadratic with discriminant 00 have? [1 point]
What is sign in −4ac-4ac?
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−4(2)(−2)=+16-4(2)(-2) = +16. Two negatives make a positive under the root.

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