Update

Muft Shiksha™ एक 100% Free Education Portal है 🇮🇳, जिसका उद्देश्य Class 9–12 के हर विद्यार्थी तक High-Quality Education को पूरी तरह मुफ्त पहुँचाना है। 🇮🇳 हम मानते हैं कि अच्छी शिक्षा किसी student की आर्थिक स्थिति पर निर्भर नहीं होनी चाहिए। 🇮🇳 हर विद्यार्थी को वही Quality Study Material, MCQs, Quizzes, Exam Preparation, Concept-Based Learning और Bilingual Support मिलना चाहिए, जो आमतौर पर महंगी Coaching या Premium Platforms में मिलता है। Muft Shiksha™ 🇮🇳 इसी सोच के साथ बनाया गया है

Subjects
0 reads0 ratings0 helpful

What is obtained when r(x) = 2x^2 + 5x − 8 is subtracted from p(x) = 6x^2 − x + 3?

Answer and explanation

Correct answer: 4x^2 − 6x + 11

The phrase “subtract r(x) from p(x)” means p(x) − r(x). Thus we calculate (6x^2 − x + 3) − (2x^2 + 5x − 8). The minus sign before the second bracket changes every sign inside it, giving 6x^2 − x + 3 − 2x^2 − 5x + 8. Now combine like terms: the x^2 terms give 6x^2 − 2x^2 = 4x^2, the x terms give −x − 5x = −6x, and the constants give 3 + 8 = 11. Hence the result is 4x^2 − 6x + 11, so option A is correct. Option C has the wrong sign for x, while B and D mishandle subtraction as addition or alter signs incorrectly.

Related tags

Polynomial-SubtractionLike-TermsAlgebraic-OperationsPolynomials In One VariablePolynomialsMathematicsClass 10 Mcq

Was this question useful?

No ratings yetWrite a review / Rate this question

Student Reviews

No published reviews yet.

Add Muft Shiksha to your Home Screen

In Safari, tap Share, then Add to Home Screen.