Ответ:
5(6x - 3) + (x - 5)(7 + x)
30х-15+7х+х²-35-5х
32х-50+х²
х²+32х-50
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Ответ:
5(6x - 3) + (x - 5)(7 + x)
30х-15+7х+х²-35-5х
32х-50+х²
х²+32х-50