Medium Math Class 9 Level 1

If x = √3 + √2 and y = √3 - √2 then what is xy?

यदि x = √3 + √2 और y = √3 - √2 हो तो xy का मान क्या होगा?

A) 1 / 1 B) 2 / 2 C) 5 / 5 D) √6 / √6
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Correct Answer

A. 1 / 1

Explanation

Using difference of squares, (√3 + √2)(√3 - √2) = 3 - 2 = 1.

(√3 + √2)(√3 - √2) = 3 - 2 = 1 इसलिए xy = 1।

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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