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OpenStudy (anonymous):
Please explain me this: 1) z²-3z-4 = (z-4)(z+1) 2) 2z²+3z-2 = (2z-1)(z+2)
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OpenStudy (anonymous):
1) \[z ^{2} - 3z -4 = z ^{2} -4z+z-4 = z(z-4)+1(z-4) =(z-4)(z+1)\]
OpenStudy (anonymous):
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