PAS
jawaban dari no 26-45: 26. 27. 28. f(x)=x^2-2x+9 a=1 b=-2 c=9 nilai min= d/-4a y=(b^2-4ac)/(-4a) y= ((-2)^2-4(1)(9))/ (-4(1)) y= -32/-4 y= 8 29. x(log 2) - y(log 3) + z(log 5)=10 2^x-3^y+5^z= 10^10 30. 31. 32. xlog x^2=2 xlog (4x+12)= xlog x^2 berarti: 4x+12= x^2 x^2-4x-12=0 dengan rumus kuadrat didapatkan x=6 atau -2 33. 34. ^2log 48+^5log 50-^2log 3-^5log 2 = ^2log 48-^2log 3+^5log 50-^5log 2 =^2log(48/3) + ^5log ( 50/2) = ^2log 16 + ^5log 25 = ^2log 2^4 + ^5log 5^2 = 4 ^2log 2 + 2 ^5log 5...