z2 – z – 56 how to factor completely this problem?

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z2 – z – 56 how to factor completely this problem?

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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(z - 8)(z + 7)
Which gives you z = 8 and z = -7 as your roots.
I get the opposite (z-7)(z+8) are they the same?

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no they are not the same. FOIL your answer you would get z^2 + z - 56
you want two numbers that multiply to -56 and add up to -1 -8 and 7 will do that 8 and -7 will get you a sum of +1 HOWEVER, the ROOTS of the equation, as BubbaMurphy says are 8 and -7 because you have (z - 8)(z + 7) = 0 so you get z - 8 = 0 z + 7 = 0 giving you z = 8 and -7
oh okey thanks guys u save me
No problem

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