7th Edition 5I.13

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Ricky Ma DIS 4E
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Joined: Fri Sep 28, 2018 12:27 am

7th Edition 5I.13

Postby Ricky Ma DIS 4E » Sun Jan 13, 2019 7:33 pm

Can someone show me what the set up for the quadratic equation for A is? I keep on getting 2X^2+1.2x10^-7X-1.2x10^-10 as my equation which when i plug it in into the quadratic formula, it gives me 8,69x10^-5 which gives me the wrong answer. Thanks!

Posts: 62
Joined: Fri Sep 28, 2018 12:16 am

Re: 7th Edition 5I.13

Postby 2c_britneyly » Mon Jan 14, 2019 11:31 am

Your first term of the equation should be 4X2 rather than 2X2. This is just a mathematical mistake. It should be (2X)2 rather than 2(X)2.

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