分解因式⑴2a（4X^2-12X）^2-36a（12X-4X^2）+162a⑵a(a-b+2)-6b(b+1)⑶(a+1)(a+3)(a+5)(a+70+15
问题描述：
分解因式
⑴2a（4X^2-12X）^2-36a（12X-4X^2）+162a
⑵a(a-b+2)-6b(b+1)
⑶(a+1)(a+3)(a+5)(a+70+15
答
不一定对敖!(1)原式=2a(16x^4-96x^3+144x^2)-432ax-144ax^2-162a=32ax^4-192ax^3+288ax^2-432ax-144ax^2-162a=32ax^4-192ax^3+144ax^2-432ax-162a(2)原式=a^2-ab+2a+6b^2+6b(3)原式=a^4+94a^3-742a^2+1955a+1275...