The value of K in the given expression (3x+y)² = 9x² + k xy +y²
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Given ,
(3x+y)² = 9x² + k xy +y²
→ (3x)² + 2×3x×y + y² = 9x² + k xy + y²
→ 9x² + 6xy + y² = 9x² + k xy + y²
→ 6xy = k xy
→ k = 6xy/xy
→ k = 6
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Step-by-step explanation:
Given,
=>(3x+y)^2 = 9x^2 + k xy + y^2.
=>9x^2 + 6 xy + y^2 = 9x^2+ k xy + y^2.
=>6 xy = k xy.
=>6 xy/xy = k.
=>k = 6.
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