SOLUTION: Solve for z: 10𝑧2 + 18𝑧 − 7 = 16𝑧2 + 48𝑧 − 12. Round your solutions to the nearest thousandth.

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Question 1068985: Solve for z: 10𝑧2 + 18𝑧 − 7 = 16𝑧2 + 48𝑧 − 12. Round your solutions to the nearest thousandth.


Answer by ikleyn(52781)   (Show Source): You can put this solution on YOUR website!
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Your first step is to move all the terms from the right side to the left side with the opposite signs.


Your second step is to simplify the obtained equation (to combine like terms).


Your third step is to apply the quadratic formula to find the solutions.


On quadratic formula see the lessons 

    - Introduction into Quadratic Equations

    - PROOF of quadratic formula by completing the square

in this site.


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