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 rectangle model of (2x+1)(3x+4), what is the total area of the x-terms?

Answer and explanation

Correct answer: 11x

The direct answer is B: 11x. In a rectangle model, split the first side into 2x and 1, and the second side into 3x and 4. This creates four smaller regions: (2x)(3x)=6x², (2x)(4)=8x, (1)(3x)=3x, and (1)(4)=4. The x-terms are the two regions containing exactly one factor x, namely 8x and 3x. Adding like terms gives 8x+3x=11x. Option A, 8x, counts only one cross-region and misses 3x. Option B is correct because it combines both linear regions. Option C, 6x, confuses 6x² with an x-term and also loses one x. Option D, 12x, does not come from any correct pair of products. Thus the complete expansion is 6x²+11x+4. Memory cue: the middle term in a binomial product comes from the two cross-multiplications.

Related tags

Rectangle-ModelCross-TermsBinomial-ExpansionVisual 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.