Question

Даю 35 баллов, пожалуйста решите, срочно нужно​

Answer 1

1)

3а² - 2в³ =

= 3 * (-17)² - 2 * (-2)³ =

= 3 * 289 - 2 * (-8) =

= 867 + 16 = 883,

2)

5х²у³ + 4(х - у) =

= 5 * (-1/2)² * (-1)³ + 4 * (-1/2 - (-1)) =

= 5 * 1/4 * (-1) + 4 * (-1/2 + 1) =

= -5/4 - 4/2 + 4 =

= -1 1/4 - 2 + 4 =

= 2 - 1 1/4 = 1 4/4 - 1 1/4 = 3/4,

3)

m² + 2mn + n² = (m + n)² =

= (-5 + 4)² = (-1)² = 1.

или:

m² + 2mn + n² =

(-5)² + 2 * (-5) * 4 + 4² =

= 25 - 40 + 16 = 1,

4)

3pq² - 2p²q = pq * (3q - 2p) =

= -4 * 3  *  (3 * (-4) - 2 * 3) =

= -12 * (-12 - 6) =

= -12 * (-18) = 216