Tolong di jelaskan (6p-5)²=? Berserta caranya

(6p-5)²=(6p) ²-2x6px5+5
=36p²-60p+25

=(6p-5) (6p-5)
=6p(6p-5)-5(6p-5)
=6p×6p,6p×-5,-5×6p,-5×-5
=12p2-30p-30p+25
=12p pngkt 2 -60p+25