Can you add and subtract integers and surds together? For example:
1. 2-2√6= √6
2. 25+ 5√5 + 5√5 +5= 40√5

or are the above examples wrong?

Both of these examples are wrong. You cannot add/subtract integers and square roots together, however, you could add square roots together if they have the same number under the square root. For example, 2 - 2√6 will stay as 2 - 2√6 because they aren't like terms. 25 + 5√5 + 5√5 + 5 = 30 + 10√5 because 25 + 5 = 30 and 5√5 + 5√5 = 10√5. We can add 5√5 and 5√5 together because they have the same number under the square root. If we were to compute √2 + √3, we would just leave it as is because they don't have the same number under the square root.

d.) yes, because the volume of the cone is greater than the volume of the sphere

step-by-step explanation: