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3.in the quadratic equation x squared plus 7 x -4 = 0 which is the quadratic term
Aײ B.7× C.3ײ D. -4

4.How many real roots does the quadratic equation ײ+5×-6=0 have?
A.0 B.1 C.2 D.3

5.What are the roots of ×(×-19)=20?
A.4 and -5 B.-4 and 5 C.20 and -1
D.-20 and 1​

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