Answer :
8 x² + 64 x = 0
x · ( 8 x + 64 ) = 0
x = 0, or: 8 x + 64 = 0
8 x = - 64
x = - 64 : 8
x = - 8
Answer : x = 0, or x = -8
x · ( 8 x + 64 ) = 0
x = 0, or: 8 x + 64 = 0
8 x = - 64
x = - 64 : 8
x = - 8
Answer : x = 0, or x = -8