Find whether x and y are rational or irrational in the following: (i) a = 2 + 3, b = 2 - 3, x = a + b, y = a - b (ii) a = 2 + 7, b = 2 - 7; x = a + b, y = a

Find whether x and y are rational or irrational in the following: (i) a = 2 + $\sqrt{3}$ , b = 2 - $\sqrt{3}$ , x = a + b, y = a - b (ii) a = $\sqrt{2}$ + 7, b = $\sqrt{2}$ - 7; x = a + b, y = a - b

Put the parts in order to form a sentence. When you think your answer is correct, click on "Check" to check your answer. If you get stuck, click on "Hint" to find out the next correct part.

Find whether x and y are rational or irrational in the following: (i) a = 2 + 3, b = 2 - 3, x = a + b, y = a - b (ii) a = 2 + 7, b = 2 - 7; x = a + b, y = a - b

Find whether x and y are rational or irrational in the following: (i) a = 2 + $\sqrt{3}$ , b = 2 - $\sqrt{3}$ , x = a + b, y = a - b (ii) a = $\sqrt{2}$ + 7, b = $\sqrt{2}$ - 7; x = a + b, y = a - b