To find the difference between 2√7 and √28, we start by simplifying √28:
√28 can be expressed as √(4 × 7), which simplifies further to √4 × √7 = 2√7.
Now, we can substitute this back into our expression:
2√7 – √28 becomes:
2√7 – 2√7.
This simplifies to:
0.
So, the statement that the difference between 2 square root of 7 and square root of 28 is zero is true. Both values are equal, and thus, their difference is indeed zero.