а) у+ 3у/у-3=у(у-3)/у-3 + 3у/у-3=у(у-3)+3y/у-3=4у
б) 2/x-5 + x+5/5x= 10x/5x(x-5) + (x+5)(x-5)/5x(x-5)= 2x+10
в) 4/x+4 - x/x-4=4(x-4)/(x+4)(x-4) - x(x+4)/(x+4)(x-4)= 4-x
г) 2p-q/p(p+q) + p-2q/q(p+q)=p²-q²/pq(p+q)=p-q/pq
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
а) у+ 3у/у-3=у(у-3)/у-3 + 3у/у-3=у(у-3)+3y/у-3=4у
б) 2/x-5 + x+5/5x= 10x/5x(x-5) + (x+5)(x-5)/5x(x-5)= 2x+10
в) 4/x+4 - x/x-4=4(x-4)/(x+4)(x-4) - x(x+4)/(x+4)(x-4)= 4-x
г) 2p-q/p(p+q) + p-2q/q(p+q)=p²-q²/pq(p+q)=p-q/pq