Choose the answer express it into percentage:

-1/4÷100%=?
(a). 50%
(b). 25%
(c). 5%​

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6 . (1 point) 5 square root of 14 end root minus 7 square root of 12 5 square root of 7 end root minus 7 square root of 6 7 square root of 12 end root minus 5 square root of 14 7 square root of 6 end root minus 5 square root of 7

How do i do this activity, is appreciated

Ineed me i stuck and i don’t want to get it wrong