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

Which is the factorised form of (6ab-9a+10b-15)?

Answer and explanation

Correct answer: \((3a+5)(2b-3)\)

Group the terms: \(6ab-9a+10b-15=3a(2b-3)+5(2b-3)\). Since \((2b-3)\) is the common binomial, the factorised form is \((3a+5)(2b-3)\). Expanding option B gives \(6ab+9a-10b-15\), which differs from the given expression. Exam tip: after factorising, expand once to check the signs of the middle terms.

Related tags

FactorisationGrouping MethodAlgebraic IdentitiesCommon BinomialClass 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.