Question

Quadratic Formula (Quadratic Equations)

Please review the attached powerpoint presentation.
Answer the following Questions:

1. What is the formula for the discriminant?

2. Tell what a,b,c is from this equation -6x^2 + 7x + 25

3. Tell what a,b,c is and the roots for the following equation. x^2 + 2x +1

Answer 1

Explanation:

You haven't provided the powerpoint screens.

If ax² + bx + c = 0, then the discriminant = b² - 4ac

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-6x² + 7x + 25 is not an equation; it is an expression.

a = -6, b = 7, c = 25

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x² + 2x + 1 is not an equation. No equals sign.

a = 1, b = 2, c = 1

roots: x = [-2±
`\sqrt{2^(2)-4*1*1}`]/[2*1] = -1