Which is the exact value of the expression the square root of 32. − the square root of 50. + the square root of 128.?

2the square root of 7.
7the square root of 2.
22the square root of 2.
2the square root of 55.

Question

Which is the exact value of the expression the square root of 32. − the square root of 50. + the square root of 128.?
 	
	2the square root of 7.
	7the square root of 2.
	22the square root of 2.
	2the square root of 55.

anonymous · Answer

@Omar_Elboredy  could you help with this one also?

anonymous · Answer

$$\sqrt{32}-\sqrt{50} + \sqrt{128} = 7\sqrt{2}$$ which will be the second question (B)