Unit 8 quadratic equations homework 7 solving quadratics by square roots answer key

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Pennsylvania State University

Sara M.

Algebra

8 months, 2 weeks ago

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Related Question

In each of the following, solve the given quadratic equation exactly using the quadratic formula. Write the solutions in its simplest form. Using a calculator, determine all irrational solutions to the nearest thousandth. $$12 x^{2}-7 x=12$$

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JM

Jonathan M.

April 29, 2022

2x^2-90=0

JM

Jonathan M.

April 29, 2022

Video Transcript

first a sub tract trail from both sides of the secret and it becomes 12 X squared minus seven years minus 12. Vehicle zero. Then we can identify the confessions of this career. A equals 12 because minor 7th and say equals miners trip. Next we substitute A B. And C. With their values. Into this form. The denominator is two times 12 And the numerator is seven plus on minors. The square road of minor seven squared -4 times 12 times -12, Which equals seven plus miners The square root of 625 or 24 what she calls seven plus miners 25/24. So the first solution is 4th, 3rd, 2nd Solutions, miners 3/4