Question

Упр 39.8(2;4)
Упростите выражения​

Answer 1

Ответ:

Задание-2

$\frac{12p^{3}-1 }{3p^{2} } -\frac{1-3p^{3} }{3p^{2} } \\\\\frac{12p^{3} -1-(1-3p^{2} )}{3p^{2} } \\\\\frac{12p^{3} -1-1+3p^{3} }{3p^{2} } \\\\\frac{15p^{3}-2 }{3p^{2} }$

Задание-4

$\frac{5x+1}{5x-20} + \frac{x+17}{20-5x} \\\\\frac{5x+1}{5x-20} + \frac{x+17}{-(5x-20)} \\\\\frac{5x+1}{5x-20} + \frac{x+17}{-5x-20}\\\\\frac{5x+1-(x+17)}{5x-20} \\\\\frac{5x+1-x-17}{5(x-4)} \\\\\frac{4x-16}{5(x-4)} \\\\\frac{4(x-4)}{5(x-4)}\\\\\frac{4}{5}$

Объяснение: все верно !