Factorise : 1) (a^2 - a)(4a^2 - 4a - 5) - 6
2) 9a^2 - (a²-4)^2
Answers
Answered by
0
Step-by-step explanation:
1) (a²-2)(4a²-4a-5)-6
a²(4a²-4a-5)-2(4a²-4a-5)-6
4a³-4a²-5a-8a²+8a+10-6
4a³-12a³+3a+4
Similar questions