Mathematical terms

123456789
Across
  1. 1. An expression with an irrational square root (like √2)
  2. 2. To put into brackets
  3. 4. An expression or equation with x^2
  4. 6. A line that the curve never reaches
  5. 7. A line that touches a curve or circle
  6. 9. To find the solution
Down
  1. 1. To draw roughly (not accurately)
  2. 3. Numbers that allow you to plot a point
  3. 5. A value of x at which the graph cuts the x axis
  4. 8. To remove brackets by multiplication