Step-1

Title: Adding and Subtracting Variables

Grade: 6-b Lesson: S2-L6

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

Discussion: Step1 Step2 Step3 Step4 Step5

Lesson Steps

Step Type Explanation Answer

1

Problem

Simplify the expression \$ (4"y"^2) + (7"y"^2) \$.

2

Step

The given expression is

\$ (4"y"^2) + (7"y"^2)\$

3

Step

Combine like terms. Like terms are terms that have the same variable raised to the same power. In this case, both terms have the variable y raised to the power of 2.

4

Step

Add the coefficients of the like terms:

\$( 4 + 7)"y"^2\$

5

Step

Perform the addition operation:

\$11("y")^2\$

6

Step

So, the simplified expression is \$11("y"^2)\$.

7

Choice.A

The response is inaccurate as the simplified form should be \$11 "y"^2\$, not \$11 "y"^3\$

\$11 "y"^3\$

8

Choice.B

The provided solution is wrong as the simplified form should be \$11 "y"^2\$, not \$15 "y"^2\$

\$15 "y"^2\$

9

Choice.C

This answer is incorrect because the simplified expression is \$11 "y"^2\$, not \$15 "y"^3\$

\$15 "y"^3\$

10

Choice.D

The simplified expression, \$11 "y"^2\$, validates this answer as being correct

\$11 "y"^2\$

11

Answer

Option

D

12

Sumup

Can you summarize what you’ve understood in the above steps?

Discussion: Step1 Step2 Step3 Step4 Step5


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