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Algebra I: Expressions and Equations

Quick questions on Solving quadratic equations - NY Regents 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 (x−4)(x+7)=0(x - 4)(x + 7) = 0. [1 credit]
What is q2?
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Use the discriminant to state the number of real roots of x2+2x+5=0x^2 + 2x + 5 = 0. [2 credits]
What is sign error in the discriminant?
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With c=−7c = -7, the term −4ac=−4(2)(−7)=+56-4ac = -4(2)(-7) = +56. A double negative becomes positive.

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