Question

x=17,y=15,z=13
x²+y²+z²2yz-2xy-2xz=?

Answer 1

Answer:

hello ☺️

Step-by-step explanation:

your answer is.....

${17}^{2} + {15}^{2} + {13}^{2} - 2(15)(13) - 2(17)(15) - 2(17)(13) \\ = 289 + 225 + 169 - 390 - 510 - 442 \\ = 689 - 1342 \\ = - 685$

OR

${(x - y - z)}^{2} \\ = {(17 - 15 - 13)} ^{2} \\ = {( - 15)}^{2} \\ = 225$

MARK ME AS A BRAINILIEST ANSWER...

FOLLOW ME...

LIKE AND RATE MY ANSWER....

I HOPE THAT I'M HELPFUL TO YOU...