Question

if x = -1, y= -2 and z = 3, find the value of 5xyz+xy²+ yz²​

Answer 1

x= -1  y = -2   z= 3

5xyz +x$y^{2}$ +$yz^{2}$

5 (-1) (-2) (3) + (-1) $(-2)^{2} + (-2) (3)^{2}$

30 - 4 - 18

30 - 22

8

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