Question

$\large{\bf{\fbox{\pink{Topic \: : \: Algebraic expressions }}}}$
If x = 1, y = 2 and z = 5, find the value of :-
x³ - y³ - z³​

Answer 1

Given:

• x = 1
• y = 2
• z=5

To find:

value of :-

• x³ - y³ - z³

Now:

insert values of x ,y and z

$\rm \red{{(1)}^{3} - {(2)}^{3} -{(5)}^{3} }$

$\implies \rm \red{1 -8 -125}$

$\implies \rm \red{1-133}$

$\implies \rm \star\boxed{\red{-132}} \star$

hope it helps!

:D

Answer 2

$\large \underbrace{ \sf{ \green{Required \: Solution:}}}$

$\implies\sf{x = 1} \\ \implies\sf{y = 2} \\ \implies \sf{z = 5} \\ \\ \longmapsto \sf{x³ - y³ - z³ = 1³ - 2³ - 5³} \\ \longmapsto\sf{1 - 4 - 25} \\ \longmapsto \sf{ 1 - 29} \\\longmapsto \sf{ -28}$

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$\red{ \mathfrak{Thank\: You :) }}$