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Find the roots of the equation using the Quadratic Formula
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$2z^2-7z-4=0$
Learn how to solve equations problems step by step online. Find the roots of 2z^2-7z+-4=0. Find the roots of the equation using the Quadratic Formula. Factor the trinomial 2z^2-7z-4 of the form ax^2+bx+c, first, make the product of 2 and -4. Now, find two numbers that multiplied give us -8 and add up to -7. Rewrite the original expression.