Holiday homework maths

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Across
  1. 4. products of rational and irrational no.
  2. 6. how many methods are there to solve any equation
  3. 9. find no. Of zeros of poly. With zero as -2 & 5
  4. 11. HCF of (8,9,25)
  5. 12. when my father is 31,I was 8,now his twice old as me , how old am I
Down
  1. 1. divide x^3+4x^2-px+8 by(x-2)
  2. 2. √2 is polynomial of degree
  3. 3. graph of quadratic equations is
  4. 5. m^2-1 divisible by 8 ,m is
  5. 6. 3 year ago sum of ages of feather and son is 40 year ,after 2 year sum of ages of father &son will be
  6. 7. the system of equations x+2y=6,3x+6=18 has how many solution
  7. 8. is 1452 divisible by 11
  8. 10. find HCF of (312,260,156)