Medium Math Class 9 Level 2

Which is the correct factorization of x² + 13x + 42?

x² + 13x + 42 का सही गुणनखंड कौन सा है?

A) (x + 6)(x + 7) / (x + 6)(x + 7) B) (x - 6)(x - 7) / (x - 6)(x - 7) C) (x + 3)(x + 14) / (x + 3)(x + 14) D) (x - 3)(x - 14) / (x - 3)(x - 14)
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Correct Answer

A. (x + 6)(x + 7) / (x + 6)(x + 7)

Explanation

The numbers 6 and 7 have product 42 and sum 13 so the factors are (x + 6)(x + 7).

6 और 7 का गुणनफल 42 और योग 13 है इसलिए गुणनखंड (x + 6)(x + 7) हैं।

Related Questions

Easy Math Class 10 Level 1

What is the area of a circle with radius 7 cm when π = 22/7?

7 सेमी त्रिज्या वाले वृत्त का क्षेत्रफल कितना होगा जब π = 22/7 हो?

A. 44 सेमी² / 44 cm² B. 77 सेमी² / 77 cm² C. 154 सेमी² / 154 cm² D. 308 सेमी² / 308 cm²
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