MATH HELP What is 8xyz - 5x² y² + 7xz³ when x = -2, y = 3 and z = -1?

👨🏻‍🏫 學術台數學

[匿名]

2015-09-10 1:08 am

Please help with this math problem and get the answer when the numbers are substituted.

8xyz - 5x² y² + 7xz³
when x = -2, y = 3 and z = -1

回答 (1)

ted s

2015-09-10 1:14 am

48 -180 +14....just replace the symbols x , y , z with the symbols - 2 , 3 , - 1...and xyz means multiplication of the symbols

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