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Step-3

Title: Substitute the varible value in square form of the expression

Grade: 8-a Lesson: S2-L2

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Determine the value of an expression when u = 4, v = -3, w = -5 \$ -u^2 + v^2 - w^2 \$
2	Step	Now substitute u,v,w values in expression	\$ -4^2 + (-3)^2 - (-5)^2 \$
3	Step	After simplification we get	\$ -16 + 9 - 25\$
4	Step	After adding we get	-32
5		Answer	D

Step

Type

Explanation

Answer

Problem

Determine the value of an expression when u = 4, v = -3, w = -5
\$ -u^2 + v^2 - w^2 \$

Step

Now substitute u,v,w values in expression

\$ -4^2 + (-3)^2 - (-5)^2 \$

Step

After simplification we get

\$ -16 + 9 - 25\$

Step

After adding we get

-32

Answer