Question

1. (5a + b + 4c)(25a² + b2 + 16c²-5ab - 4bc - 20ca)
2. (a + 2b + 4c)(a + 4b2 + 16c2 - 2ab - 8bc - 4ca)
3. (1 + b + 2c)(1 + b2 + 4c? - b - 2bc - 2c)
only psr should answer
4. (6 + 3b + 2c)(36 +962 + 4c? - 18b - 6bc - 12c)
5. (3a - b + 2c)(90? + b2 + 4c? + 3ab + 2bc - 6ca)
6. (2a + 5b - 4c)(4a² + 2562 +16c2 - 10 ab + 20bc + Sca)
7. (2 – 36 – 7c)(4 +962 +49c² + 6b – 21bc + 14c)
8. (5 – 2x – 3y)(25 + 4x2 +9y2 + 10x – 6xy + 15y)
9. (2a + 2,2b + c)(2a? + 862 +c? – 4ab – 2/2 bc - v2 ac)
10. (x + y + 4)(x² + y2 +16 - xy - 4y - 4x)
11. 3(a - b)(b -c)(c - a)
12. 3(3a - 2b)(2b-5c)(5c - 3a)
13. 3abc(a - b)(b - c)(c - a) 14. 3(5a - 7b)(9C -5a)(7b-9c)
15. x + y3 – 2 + 3xyz
16. x® – 8yº + 27 + 18xy
17. x? - 8y3 – 2 - 6xyz
18. 0
19.0
"31
)=1​

Answer 1

Answer:

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