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

If a square model shows (9x^2), two (6x) rectangles, and a small square (4), what will be the outer side?

Answer and explanation

Correct answer: (3x+2)

Direct answer: A, 3x+2. In a square model, the large square area is the square of one part of the outer side. Since 9x^2=(3x)^2, that part of the side is 3x. The small square has area 4=2^2, so its side is 2. The outer side is formed by placing these lengths together: 3x+2. The two rectangles confirm the result because each has area (3x)(2)=6x, exactly as stated. Option A satisfies all three pieces and expands to (3x+2)^2=9x^2+12x+4. Option B adds areas rather than taking their square roots, so it is not a length. Option C uses 4 instead of the side 2 of the small square. Option D uses 6x, which is a rectangle area coefficient, not a side length. Memory cue: in a square tile model, take square roots of the two corner-square areas, then add the resulting side lengths.

Related tags

Perfect SquareArea TilesSide IdentificationVisual 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.