Portfolio maths

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Across
  1. 3. The pair of equations x=0 and x=5 has ..... solution.
  2. 4. Every ...... numbers can be expressed as a product of primes and this factorisation is unique.
  3. 8. The zeroes of the quadratic polynomial x²+1950x+175000 are both.....
Down
  1. 1. If a pair of linear equation is consistent,then the lines will be....
  2. 2. The zeroes of the quadratic polynomial x²-15x+5 are both......
  3. 5. m²-1 is divided by 8, If m is........ number
  4. 6. The product of a rational number and irrational number is ......?
  5. 7. graphically the pair of equations 7x-y=5 ; 21x-3y=10 represents two lines which are.......