Question: Solve each equation by using a graphing utility to find the zeros of the function. Solve the equation algebraically to check your results. 1. 4z2

Solve each equation by using a graphing utility to find the zeros of the function. Solve the equation algebraically to check your results.

1. 4z2 + 25 = 0

2. z(z + 6) = 27

3. 3x2 - 18x - 48 = 0

4. 3x2 - 6x - 9 = 0

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