Evaluate: X²-y²-z² for x=9,y=-7 and z=3
Answers
Answered by
0
Answer:
x= 9
y= -7
z=3
x²-y²-z²= 9²-(-7)²-(3)²
= 81-(49)-9
= 81-58
x²-y²-z²= 23
Answered by
7
Answer:
9²-(-7) ²-3²
=81-49-9
=81-58
=23(ans)
hope it's help
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