Question

if x =1, y=2 and z=5, solve x3-y3-z3​

Answer 1

Answer:

${ \huge{ \mathfrak{ \red{ \fbox{given} {\rightarrow}}}}}\\ \\ \sf {x = 1} \\ \sf{y = 2} \\ \sf{ z = 5} \\ \\ { \huge{ \blue{ \fbox{solution}{ \rightarrow}}}} \\ \\ \rightarrow\sf {{x}^{3} - {y}^{3} - {z}^{3}} \\ \\ \rightarrow \sf{ {(1)}^{3} - {(2)}^{3} - {(5)}^{3} } \\ \\ \rightarrow \sf{(1 \times 1 \times 1 )- (2 \times 2 \times 2) - (5 \times 5 \times 5)} \\ \\ \rightarrow\sf{ 1 - 8 - 125} \\ \\ \rightarrow \sf{1 - 133} \\ \\ {\rightarrow{ \boxed{ \green{ \fbox{ \colorbox{black}{ \sf{ - 132}}}}}}}$

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Answer 2

Answer:  -132

Step-by-step explanation:

 x3-  y3-z3

Substituting x=1,y=2 and z=5 in the given expression:

3    3      3

1   -2-   3      =(1×1×1)-(2×2×2)-(5×5×5)=1-8-125 = -132