expand (5 x - 3 y)^2 using suitable identity
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Step-by-step explanation:
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Step-by-step explanation:
(5x - 3y)²
=> (5x)²- 2(5x)(3y) + (3y)² {(a-b)² = a²-2ab+b²}
=> 25x² -30xy +9y²
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