Exploring Algebraic Identities — Flashcards
CBSE · Class 9 · Mathematics
70 flashcards for Exploring Algebraic Identities (CBSE Class 9 Mathematics) to test yourself on key terms and facts.
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What is an algebraic identity?
Answer
An algebraic identity is an equation that is true for all values of the variables occurring in it. It is different from an equation that is true only for some values. Example: (x + y)^2 = x^2 + 2xy + …
बीजीय सर्वसमिका क्या है?
Answer
एक बीजीय सर्वसमिका एक ऐसा समीकरण है जो इसमें आने वाले चरों के सभी मानों के लिए सत्य होता है। यह उस समीकरण से अलग है जो केवल कुछ मानों के लिए सत्य होता है। उदाहरण: (x + y)^2 = x^2 + 2xy + y^2 एक सर्वसम…
सर्वसमिका समीकरण से कैसे अलग है?
Answer
सर्वसमिका चरों के सभी मानों के लिए सत्य होती है। एक समीकरण केवल कुछ विशेष मानों के लिए सत्य हो सकता है। उदाहरण के लिए, x^2 - 1 = 24 केवल x = 5 या x = -5 के लिए सत्य है, इसलिए यह एक समीकरण है, सर्वसमिक…
How is an identity different from an equation?
Answer
An identity is true for all values of the variables. An equation may be true only for specific values. For example, x^2 - 1 = 24 is true only for x = 5 or x = -5, so it is an equation, not an identity…
State the identity for the square of a sum.
Answer
Square of sum: (a + b)^2 = a^2 + 2ab + b^2. Here a and b can be any numbers or lengths. It is used to expand binomials and to calculate squares quickly.
योग के वर्ग की सर्वसमिका लिखिए।
Answer
योग का वर्ग: (a + b)^2 = a^2 + 2ab + b^2। यहाँ a और b कोई भी संख्याएँ या लंबाइयाँ हो सकती हैं। इसका उपयोग द्विपदों का विस्तार करने और वर्गों की जल्दी गणना करने के लिए किया जाता है।…
(a + b)^2 = a^2 + 2ab + b^2 क्यों सत्य होता है?
Answer
वितरण गुणधर्म का उपयोग करके: (a + b)^2 = (a + b)(a + b) = a(a + b) + b(a + b) = a^2 + ab + ba + b^2 = a^2 + 2ab + b^2। यह सामान्य रूप से सर्वसमिका को सिद्ध करता है।…
Why does (a + b)^2 = a^2 + 2ab + b^2 hold?
Answer
Using the distributive property: (a + b)^2 = (a + b)(a + b) = a(a + b) + b(a + b) = a^2 + ab + ba + b^2 = a^2 + 2ab + b^2. This proves the identity generally.
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- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
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