Question 58Asked in CTET January 2024 Paper 2 Maths & Science, 21 Jan 2024

If A = −2x² + 12x, B = 11 − 8x + 3x², C = 17 − 4x² and D = x² − x − 3, then what is the sum of the co-efficients of x² and x in (A + B + C − D) ?यदि A = −2x² + 12x, B = 11 − 8x + 3x², C = 17 − 4x² और D = x² − x − 3 हैं, तो (A + B + C − D) में x² और x के गुणांकों का योग है :

यदि A = −2x² + 12x, B = 11 − 8x + 3x², C = 17 − 4x² और D = x² − x − 3 हैं, तो (A + B + C − D) में x² और x के गुणांकों का योग है :
  1. A00
  2. B−1−1
  3. C11
  4. D33
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Correct answer: (C) 11

Explanation

Coefficient of x²: −2 + 3 − 4 − 1 = −4. Coefficient of x: 12 − 8 + 0 + 1 = 5. Their sum = −4 + 5 = 1.x² का गुणांक: −2 + 3 − 4 − 1 = −4। x का गुणांक: 12 − 8 + 0 + 1 = 5। इनका योग = −4 + 5 = 1।

From CTET January 2024 Paper 2 Maths & Science, 21 Jan 2024 — Previous Year Paper

This is question 58 of CTET January 2024 Paper 2 Maths & Science, 21 Jan 2024 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.