Ответ:
(-5х×9х+(-5х×-2))+(6×х+6×(-4))
-45х^2+10х+6х+(-24)
-45х^2+16х-24
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Ответ:
(-5х×9х+(-5х×-2))+(6×х+6×(-4))
-45х^2+10х+6х+(-24)
-45х^2+16х-24