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

In the area model of a rectangle, the four regions have areas x^2, 3x, 2x, and 6. Which two expressions represent the sides of the rectangle?

Answer and explanation

Correct answer: (x+2) and (x+3)

The direct answer is option A: (x+2) and (x+3). In an area model, split one side into x and 2, and split the other side into x and 3. Multiplying every pair of pieces gives four regions: x·x = x^2, x·3 = 3x, 2·x = 2x, and 2·3 = 6. These are exactly the four areas stated in the question. Therefore the complete rectangle has dimensions (x+2) and (x+3), and its total area is (x+2)(x+3) = x^2+5x+6. Option B would produce x^2+7x+6, not the given terms. Option C would produce x^2+8x+12, so both middle and constant parts differ. Option D would produce x^2+6x+9. A useful check is that the constant region must be the product of the two numerical parts: 2 × 3 = 6.

Related tags

Area ModelFactorisationBinomial ProductsRectangle IdentityVisual Models Of IdentitiesExploring Algebraic IdentitiesMathematicsClass 9 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.