Question

using identity 1 and 2 solve it (0.5x+0.3y)²​

Answer 1

(A + B) ² = A² + 2ab + B²

(0.5x + 0.3y)² = 0.5x² + 2 ^ 0.5 ^ 0.3 + 0.3y²

= 0.25x² + 0.3 + 0.9y²

Answer 2

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