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Unlimited Practice: Zeros

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1. Using a calculator, find the real zeros of the function $y = 5 x^{2} - x - 2$ , to the nearest thousandth

$\left\{-0.54, 0.74\right\}$

$\left\{-0.74, 0.54\right\}$

$\left\{0.1 - 0.64 i, 0.1 + 0.64 i\right\}$

$\left\{-4.0, 4.2\right\}$

2. Using a calculator, find the real zeros of the function $y = - 4 x^{2} - 4 x - 1$ , to the nearest thousandth

$\left\{0.5\right\}$

$\left\{2.0\right\}$

$\left\{-1.0\right\}$

$\left\{-0.5\right\}$

3. What are the zeros of the function $y = x^{2} + 18 x + 17$ ?

$\left\{-9 - 8 i, -9 + 8 i\right\}$

$\left\{1, 17\right\}$

$\left\{-137, 119\right\}$

$\left\{-17, -1\right\}$

4. Using a calculator, find the real zeros of the function $y = 3 x^{2} + 6 x + 5$ , to the nearest thousandth

$\left\{-2.0 - 1.633 i, -2.0 + 1.633 i\right\}$

$\left\{1.0 - 0.816 i, 1.0 + 0.816 i\right\}$

$\left\{-3.0 - 2.449 i, -3.0 + 2.449 i\right\}$

No real zeros

5. Using a calculator, find the real zeros of the function $y = - 6 x^{2} + 6 x - 6$ , to the nearest thousandth

$\left\{-8.5, 9.5\right\}$

No real zeros

$\left\{-3.0 - 5.196 i, -3.0 + 5.196 i\right\}$

$\left\{1.0 - 1.732 i, 1.0 + 1.732 i\right\}$

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