Question

Simplify nine square root of two minus three square root of seven-plus square root of eight minus the square root of twenty-eight.

Answer 1

Answer:

= 11√2 - 5√7

Step-by-step explanation:

9√2 - 3√7 + √8 - √28

= 9√2 - 3√7 + 2√2 - 2√7

add similar elements

= 11√2 - 3√7 - 2√7

= 11√2 - 5√7

Answer 2

Answer:

11$\sqrt{2}$ - 5√7

Step-by-step explanation:

= 9$\sqrt{2}$ - 3$\sqrt{7}$ + 2√2 - 2$\sqrt{7}$

= 11$\sqrt{2}$ - 3$\sqrt{7}$ - 2$\sqrt{7}$   add similar elements

= 11$\sqrt{2}$ - 5$\sqrt{7}$