I'm new to cryptography and the associated level of maths. I'm practising past papers for an exam and found the question:
Show that the condition 4a^3 + 27b^2 ≠ 0 mod p is fulfilled for the elliptic curve y^2 ≡ x^2 + 2x + 2 mod 17.
Surely elliptic curves usually follow the format y^2 ≡ x^3 + ax + b mod p?
The x^2 has thrown me on this - can anyone clarify if this looks like a typo?
Many thanks, Paul