Tentukan Nilai Masing Masing Bentuk aljabar berikut ini,jika a=3 1.-6a 2.3a-5 3.5a2+6 4.a3+5a2 5.4a2+3a-7

1. -6a = -6(3) = -18
2. 3a-5 = 3(3)-5 =9-5=4
3.5a²+6=5(3²)+6=5(9)+6=51
4.a³+5a²=3³+5(3²)=27+5(9)=72
5.4a²+3a-7= 4(3²)+3(3)-7= 4(9)+9-7=38