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 the factor form of \(x^2+12x+36\)?

Answer and explanation

Correct answer: \((x+6)^2\)

Correct answer: A. Use \(a^2+2ab+b^2=(a+b)^2\). Here the first term is \(x^2=x^2\), the constant term is \(36=6^2\), and twice the product of the two square roots is \(2\cdot x\cdot6=12x\), exactly the middle term. Thus \(x^2+12x+36=(x+6)^2\). A expands back to the original expression, so it is verified. B would expand to \(x^2+24x+144\), changing both the middle and constant terms. C would give \(x^2-12x+36\), so its sign is wrong. D expands to \(x^2+15x+36\), not \(x^2+12x+36\). A useful method is to take the square root of the first and last terms, then check the middle term. Warning: the sign inside the bracket controls the sign of the middle term.

Related tags

FactorisationPerfect Square TrinomialAlgebraic IdentitiesQuadratic ExpressionsClass 9 MathematicsExploring 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.