Medium Math Class 9 Level 5

Which is the correct factorization of x² - 19x + 90?

x² - 19x + 90 का सही गुणनखंड कौन सा है?

A) (x - 9)(x - 10) / (x - 9)(x - 10) B) (x + 9)(x + 10) / (x + 9)(x + 10) C) (x - 6)(x - 15) / (x - 6)(x - 15) D) (x + 6)(x + 15) / (x + 6)(x + 15)
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Correct Answer

A. (x - 9)(x - 10) / (x - 9)(x - 10)

Explanation

The numbers 9 and 10 have product 90 and sum 19 so the factors are (x - 9)(x - 10).

9 और 10 का गुणनफल 90 और योग 19 है इसलिए गुणनखंड (x - 9)(x - 10) 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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