please explain the circled steps.


please explain the consequtive steps....

4 Answers

1
Arshad ~Died~ ·

smple quadratic equation solving.....

1
vimalesh mallya ·

i can understand mod z2 but how mod z is coming?

66
kaymant ·

That's because
2a2+2a4+4a2
=42a2+42a2(a2+4)
=4a2+(a2+4)2a(a2+4)
=(2a2+4a)2
And similarly for the other one.

1
vimalesh mallya ·

why not?

( (a-√a2+4)2/2)2

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