Question

(-2)³•3²+2⁴•(-3)³=? 2³•(-5)³-3²•(-1)⁵+2¾•(-3)³=?

Answer 1

Пошаговое объяснение:

(-2)³•3²+2⁴•(-3)³=-8×9+16×(-27)=-72- 312=-384

Answer 2

Let's solve these expressions step by step:

1. (-2)³ • 3² + 2⁴ • (-3)³

First, calculate the values inside the parentheses and exponents:

(-2)³ = -8 3² = 9 2⁴ = 16 (-3)³ = -27

Now, substitute these values back into the expression:

-8 • 9 + 16 • (-27)

Now, perform the multiplications:

-72 - 432

Finally, add the two results together:

-72 - 432 = -504

So, the first expression equals -504.

2. 2³ • (-5)³ - 3² • (-1)⁵ + 2¾ • (-3)³

First, calculate the values inside the parentheses and exponents:

2³ = 8 (-5)³ = -125 3² = 9 (-1)⁵ = -1 2¾ = 2.25 (or 9/4) (-3)³ = -27

Now, substitute these values back into the expression:

8 • (-125) - 9 • (-1) + 2.25 • (-27)

Now, perform the multiplications:

-1000 + 9 + (-60.75)

Finally, add the results together:

-1000 + 9 - 60.75 = -1051.75

So, the second expression equals approximately -1051.75.