Question

Tolong bantu jawab yg B sma E

Answer 1

B) 4-√2 / 4+√2
= 4-√2 / 4+√2 .4-√2 /4-√2
= 4.4 + 4.(-√2) + (-√2).4 + (-√2).(-√2) / 4.4 + √2.(-√2)
= 16-4√2-4√2+2 / 16-2
= 16-8√2+2 / 14
= 18-8√2 / 14 atay 9-4√2 / 7