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Verified answer
Jawabm - n = 7 - 2√ 3 - (2 + √75)
m- n = 7 - 2√3 - 2 - √75
m - n = 7 - 2√3 - 2 - 5 √3
m- n = 5 - 7√3
n = 2 + √75
√75 = √25x3 = 5√3
m - n = (7 - 2√3) - (2 + √75)
= 7 - 2√3 - 2 - √75
= 5 - 2√3 - 5√3
= 5 - 7√3