Medium Math Class 9 Level 6

Which is the correct factorization of x² - 21x + 110?

x² - 21x + 110 का सही गुणनखंड कौन सा है?

A (x - 10)(x - 11) / (x - 10)(x - 11) B (x + 10)(x + 11) / (x + 10)(x + 11) C (x - 5)(x - 22) / (x - 5)(x - 22) D (x + 5)(x + 22) / (x + 5)(x + 22)
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Correct Answer

A. (x - 10)(x - 11) / (x - 10)(x - 11)

Explanation

The numbers 10 and 11 have product 110 and sum 21 so the factors are (x - 10)(x - 11).

10 और 11 का गुणनफल 110 और योग 21 है इसलिए गुणनखंड (x - 10)(x - 11) हैं।

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