Ответ:
Объяснение:
А) (12-2v)/v^2 - (6v+5)/v^2 = (7-8v)/v^2
Б) (9d+b)/(b-d) - 8d/(b+d) = [(9d+b)(b+d) - 8d(b-d)] / [(b-d)(b+d)] =
= (9bd+b^2+9d^2+bd-8bd+8d^2) / (b^2 - d^2) = (b^2 + 2bd + 17d^2) / (b^2 - d^2)
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Ответ:
Объяснение:
А) (12-2v)/v^2 - (6v+5)/v^2 = (7-8v)/v^2
Б) (9d+b)/(b-d) - 8d/(b+d) = [(9d+b)(b+d) - 8d(b-d)] / [(b-d)(b+d)] =
= (9bd+b^2+9d^2+bd-8bd+8d^2) / (b^2 - d^2) = (b^2 + 2bd + 17d^2) / (b^2 - d^2)