Question

Determine the square of 5x-7​

Answer 1

Answer:

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Step-by-step explanation:

$(5x-7)²$

$[ (a-b)²=a²+b²-2ab]$

$= (5x)²+(7)²-2(5x)(7)$

$= 25x²+49-70x$

$=> 25x²-70x+49$

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