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Step-5

Title: Evaluate the expression

Grade: 7-b Lesson: S3-L7

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

Lesson Steps

Steps	Problem	Solution
1	Evaluate the expression when \$x = -4\$	\$ 2x^2 − 8x + 4 \$
2	Substitute '\$x = -4\$' in expression	\$ 2(-4)^2 - 8(-4) + 4 \$
3	After simplification	\$ 2(16)+32+4\$
4	After multiplication	\$ 32+32+4 \$
5	After Addition	\$ 68 \$
6	Answer	B = \$ 68 \$

Steps

Problem

Solution

Evaluate the expression when \$x = -4\$

\$ 2x^2 − 8x + 4 \$

Substitute '\$x = -4\$' in expression

\$ 2(-4)^2 - 8(-4) + 4 \$

After simplification

\$ 2(16)+32+4\$

After multiplication

\$ 32+32+4 \$

After Addition

\$ 68 \$

Answer

B = \$ 68 \$