tolong di bantu ya kak nomor 6-7

jadiin jawaban terbaik ya

6. 2x²-8/x+2
=2(x²-4)/x+2
=2(x+2)(x-2)/(x+2)
=2((-2)-2)
=-8
7. x³-16x/x²+4x
=x(x-4)(x+4)/x(x+4)
=(x-4)
=0+4
=4