Question

Ka bantu jawab donk no 15-16 belum di Sampein gurunya soalnya materinya jadi agak bingung .. mohon bantuan nya ka

Answer 1

15) (2√5+3√2)(√5-2√2)=2√5.√5-2√5.2√2+3√2.√5-3√2.2√2
=2√25-4√10+3√10-6.2
=2.5-√10-12
=10-12-√10
=-2-√10 (C)

16)1/5(25^X+1)=(5³)³
=5^X+1=5^9
=X+1=9
X=8
2x+2=2(8)+2
=16+2
=18