<span>
9b a</span>² - ab 9b * a * (a - b)<span>
9в/а-в х а^2-ав/45в = ----------- * ------------ = ----------------------- = a / 5
a - b 45b (a - b) * 9b * 5
</span><span>а=-83
-83 / 5 = -16,6</span>
= (6u²-29u-5)(3u-6) = 18u³-36u²-87u²-174-15u+30 = 18u³-123u²+174u-15u+30 = 18u³-123u²-159u+30