Use the discriminant to determine the number of real solutions of the quadratic equation below. 
Definitions:
Public-key Encryption
An encryption method that uses a pair of keys, one for encrypting the message (public key) and one for decrypting it (private key).
VoIP
Voice over Internet Protocol, a technology that allows voice calls to be made over the internet, converting analog voice signals into digital data packets.
Two-party Encryption
An encryption method where only two parties can access and decipher the encrypted information, ensuring privacy and security in communications.
Double Fertilization
A unique process in angiosperms where one sperm cell fertilizes an egg cell forming a zygote, and the other sperm cell fuses with two polar nuclei, forming a triploid cell that develops into the endosperm.
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