tolong di jwb sama cara nya

No.10
9^(2x + 4) = 3^(3x + 3)
3^(4x + 8) = 3^(3x + 3)
4x + 8 = 3x + 3
4x - 3x = 3 - 8
x = -5

No.11
²log6 + ²log4 - ²log3
= ²log(6 . 4) - ²log3
= ²log24 - ²log3
= ²log(24/3)
= ²log8
= ²log2³
= 3.