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4. What is the nature of the roots of the equation 7ײ – 2× – 3 = 0?

a. rational and equal
b. rational and not equal
c. irrational and not equal
d. no real roots

5. The equation 2ײ + 5× + n = 0 has no real roots, what must be the value of n?
a. – 2
b. 3
c. – 6
d. 7​