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 form can be used to find ( 48^2 ) easily?

Answer and explanation

Correct answer: \((50-2)^2\)

Since \(48=50-2\), it is convenient to write \(48^2\) as \((50-2)^2\). Using \((a-b)^2=a^2-2ab+b^2\), we get \((50-2)^2=50^2-2\times50\times2+2^2\). In contrast, \((48+2)(48-2)\) equals \(48^2-2^2\), not \(48^2\) directly. Exam tip: for quick squaring, express a number near 10, 50, or 100.

Related tags

Algebraic IdentitiesSquare Of A BinomialMental CalculationClass 9 MathematicsDifference Of SquaresExploring 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.