Class 9 Mathematics - Exploring Algebraic Identities - Quadratic expressions Hard Quiz

Mathematics Exploring Algebraic Identities Quadratic expressions Hard Class 9 Level 68

Level 68 • 1/50 questions • 30 seconds per question.

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Question 1/1 Hard Mathematics Exploring Algebraic Identities Visual models of identities Class 9 Level 68

एक आयत मॉडल में क्षेत्रफल \(x^2+9x+20\) है और छोटे कोने का क्षेत्रफल (20) है। कौन सी भुजाएँ संभव हैं?

A rectangle model has area \(x^2+9x+20\) and the small corner area is (20). Which sides are possible?

Explanation opens after your attempt
Correct Answer

B. (x+4) और (x+5)(x+4) and (x+5)

Step 1

Concept

The numbers (4) and (5) have product (20) and sum (9). Exam tip: check corner product and middle sum together.

Step 2

Why this answer is correct

The correct answer is B. (x+4) और (x+5) / (x+4) and (x+5). The numbers (4) and (5) have product (20) and sum (9). Exam tip: check corner product and middle sum together.

Step 3

Exam Tip

संख्याएँ (4) और (5) का गुणन (20) और योग (9) है। परीक्षा में कोने का गुणन और बीच का योग साथ देखें।

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