If w, x, y, and z are real numbers satisfying
w + x + y = -2
w + x + z = 4
w + y + z = 19
x + y + z = 16
what is wx + yz?
Hello,
w = - \frac{11}{3}
x = - \frac{20}{3}
y = \frac{25}{3}
z = \frac{43}{3}
(−113∗(−203))+(253∗433)=12959=14389=143.¯8
Straight
