- A
- B
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- D
Step-by-Step Solution
Required = . Check: . Adding the two given expressions instead of subtracting gives ; forgetting that gives ; forgetting that gives a constant of −2.
Answer: A)
What must be added to to get ?
Class 8Algebraic Expressions and IdentitiesAlgebra
Key idea: Adding and subtracting expressions
Combine **like terms only** — same variables and same powers.
Example: .
For subtraction, distribute the minus sign first:
.
Example: .
For subtraction, distribute the minus sign first:
.
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