Question
Easy
Let P = 12xy - 10y$^2$ – 18x$^2$, Q = 14x$^2$ + 12y$^2$ + 9xy, and R = 5y$^2$ - x$^2$ + xy then (P + Q) – R =
1
22xy-3x$^2$ + 3y$^2$
2
22xy + 3x$^2$ - 3y$^2$
3
20xy-7x$^2$- 3y$^2$
4
20xy-3x$^2$- 3y$^2$
Question Details
Time to Solve: 12
Exam: CTET
Level/Paper: CTET_P2
Chapter: Algebra
Topic: Algebraic Expressions
Correct Answer
Option D
Explanation
To solve the problem and verify why Option 4 is the correct answer, we need to perform the operations as specified in the question and compare the result with the given options. Step-by-Step Explanation: 1. Calculate P + Q: Given: - \( P = 12xy - 10y^2 - 18x^2 \) - \( Q = 14x^2 + 12y^2 + 9xy \) Add P and Q: \[ P + Q = (12xy…Read More
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