expand each of expressions using algebric identities (5d - 6)^2
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Step-by-step explanation:
= ( 5d - 6 ) ²
= (5d ) ² - 2 × 5d × 6 + 6²
= 25d² - 60d + 36
NOTE: ( a - b ) ² = a² - 2ab + b²
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