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

A student says that \((x+5)^2=x^2+25\) because both terms were squared separately. Which expression correctly fixes the error?

Answer and explanation

Correct answer: \(x^2+10x+25\)

Use \((a+b)^2=a^2+2ab+b^2\). With \(a=x\) and \(b=5\), the middle term is \(2\times x\times5=10x\), giving \(x^2+10x+25\). Exam tip: always check for the middle term.

Related tags

Algebraic IdentitiesQuadratic ExpressionsBinomial SquareCommon ErrorsClass 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.