Question

Tolong jawab no GENAP

Answer 1

2) 9x²-8x²+7x^3-5x^3 = x²+2x^3

4) 3b-bx / cx-3c = b.(3-x) / c.(x-3)

6) x/x+y + y/x-y
= x.(x-y) / (x+y).(x-y) + y.(x+y) /
(x+y).(x-y)

= x²-xy+xy+y² / x²-xy+xy-y²

= x²+y² / x²-y²


8) x²-5x-6 / x+1 = (x+1).(x-6) / x+1
= x-6

10) 2x²+3x-9 / x²+2x-3
= (2x-3).(x+3) / (x-1).(x+3)
= 2x-3 / x-1

12) -x²-2x+35 / x²-25
atau
x²+2x-35 / x²-25
= (x-5).(x+7) / (x+5).(x-5)
= x+7 / x+5