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 simplified form of ( (a+6)^2-(a-6)^2 )?

Answer and explanation

Correct answer: (24a)

The direct answer is B: \\(24a\\). There are two reliable methods. Using difference of squares, write the expression as \\([(a+6)^2-(a-6)^2]=[(a+6)-(a-6)][(a+6)+(a-6)]\\). The first bracket is 12 and the second is 2a, so the product is \\(12\\times2a=24a\\). By expansion, \\(a+6\\)^2=a^2+12a+36\\), while \\(a-6\\)^2=a^2-12a+36\\). Subtracting gives \\(a^2+12a+36-a^2+12a-36=24a\\). Thus B is correct. A, 12a, keeps only one middle contribution. C, 36a, confuses the square of 6 with the full difference. D leaves an unrelated expression and fails to cancel the a² and constant terms. Common mistake: the minus sign before the second bracket changes every sign inside it.

Related tags

Difference Of SquaresSimplificationAlgebra

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.