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 correct factorised form of (3a^2b+6ab^2-9ab)?

Answer and explanation

Correct answer: (3ab(a+2b-3))

Look for a factor common to every term. In \(3a^2b+6ab^2-9ab\), each term contains \(3ab\). Dividing each term by it leaves \(a\), \(2b\), and \(-3\), respectively. Therefore the expression factors as \(3ab(a+2b-3)\), which is option A.

Verification by distribution gives \(3ab\cdot a=3a^2b\), \(3ab\cdot2b=6ab^2\), and \(3ab\cdot(-3)=-9ab\). Option B leaves an extra factor of \(b\) missing from the first term. C places the original factors incorrectly inside the bracket, and D does not preserve the terms after expansion. Extracting the greatest common factor is usually the first step in factorisation.

Related tags

Common FactorAlgebraic FactorisationMonomials

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.