0
Anonymous
Using the quadratic formula you get z≅4.91547594742265
or
z≅-0.91547594742265
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4z squared (z+4) (z+4)
2
7 + 4z = 437 + 4z -7 = 43 - 7 4z = 43 - 7 4z = 36 z = 9
4z-11=45 4z=56 z=14
4z + 820 is not an equation. It has no answer, because it asks no question.