find the value plzzzz
Share
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
Step-by-step explanation:
x+y-z=4
squaring
x^2+y^2+z^2+2xy-2yz-2zx=16
30+2(xy-yz-zx)=16
2(xy-yz-zx)=-14
xy-yz-zx=-7
Hope this answer will help you.....