8x²-4-221=0, berapa x1 dan x2 nya ?

8x²-4-221 = 0
8x² = 0 + 4 + 221
8x² = 225
8x = √225
8x = 15
x = 15/8
x = 1,875
x² = 3,515
Maaf kalo salah :(

8x^2-4-221=0
8x^2=0+4+221
8x^2=225
8x=√225
8x = 15
x= 15/8
= 1,875

JADIKAN JAWABAN TERBAIK YA
Thanks