Question

Can anyone can pzlzp solve 23,24,25,26 and 27 sums for me pzlzp it's very urgent

Answer 1

3log[x+y]=3logx+3logy+3log2
log[x+y]³=logx³+logy³+log2³
log[x+y]³=logx³*y³*8
log[x+y]³=log8x³y³
[x+y]³=8x³y³
x+y=∛8x³y³
x+y=2xy
x+y/xy=2
1/x+1/y=2
27
x²-7x+10=0
x²-5x-2x+10=0
x[x-5]-2[x-5]=0
[x-2][x-5]=0
x=2,x=5
x²-5x+6=0
x²-3x-2x+6=0
x[x-3]-2[x-3]=0
[x-3][x-2]=0
x=3,x=2
therefore A={2,5};B={2,3}
A∩B={2}
A∪B={2,3,5}
A-B={5}
B-A={3}