Question 1

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Question text

Calcula les identitats notables següents:
left parenthesis 5 times x plus 7 right parenthesis left parenthesis 5 times x minus 7 right parenthesis equals
left parenthesis x plus 2 right parenthesis left parenthesis x minus 2 right parenthesis equals
left parenthesis 8 times x plus 8 right parenthesis left parenthesis 8 times x minus 8 right parenthesis equals
left parenthesis 3 times x plus 2 right parenthesis left parenthesis 3 times x minus 2 right parenthesis equals

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