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 a visual model, \(x^2+5x+6\) can be formed by which rectangle?

Answer and explanation

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

The direct answer is B: \((x+2)(x+3)\). To factor \(x^2+5x+6\), find two numbers whose sum is 5 and whose product is 6. Those numbers are 2 and 3. Therefore, \((x+2)(x+3)=x^2+3x+2x+6=x^2+5x+6\). In the rectangle model, the x-by-x region gives \(x^2\), the two side strips give \(3x ext{ and }2x\), and the corner gives 6. Option A gives \(x^2+7x+6\), because 1+6=7. Option C gives \(x^2+11x+30\), so both the middle and constant terms are wrong. Option D gives \(x^2+6x+5\). A useful factorisation check is: for \(x^2+bx+c\), the two numbers must add to b and multiply to c.

Related tags

FactorisationQuadratic ModelRectangle FactorsVisual AlgebraVisual 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.