Question

2 min 4 akar 7 per akar 5 ditambah 2

Answer 1

= 2 - 4 akar 7 per akar 5 + 2 X ( akar 5 - 2) / (akar 5 - 2)
= (2 akar 5 - 4 akar 5 akar 7 - 4 + 8 akar 7) / (5 - 4)
= 2 akar 5(1 - 2 akar 7 ) - 4 (1 - 2 akar 7)
= (2 akar 5 - 4) ( 1 - 2 akar 7 )