expand this please for 9th
Attachments:
Answers
Answered by
1
Answer:
Step-by-step explanation:
(a+b+c)³=(a+b+c)²(a+b+c)
=(a²+b²+c²+2ab+2bc+2ca)(a+b+c)
(2x-3+z)³=(9x²-9+z²-12x-6z+4xz)(2x-3+z)
=18x³-27x²+9x²z-18x+27-9z+2xz²-3z²+z³-24x²+36x-12xz-12xz+18z+6z²+8x²z-12xz+4xz²
=18x³+z³-51x²+3z²+17x²z+6xz²-36xz+18x+9z+27
Similar questions