Question

(1/4×(-7,2)+1/8×(-7,2))×(-7,2^2)/2

Answer 1

(-7,2)(1/4+1/8)*(-7,2²)*1/2=(-7,2)³(1/4+1/8)*1/2=(-7,2)³*3/8*1/2=(-7,2)³3/16=-
(36/5)³*3/16=-46656*3/(125*16)=-139968/2000=-69,984

Answer 2

Let's simplify the expression step by step:

1. First, simplify the fractions: (1/4 * (-7.2) + 1/8 * (-7.2))

   To add fractions, we need a common denominator, which is 8 in this case: (2/8 * (-7.2) + 1/8 * (-7.2))

   Now, combine the fractions: (-2/8 * 7.2 - 1/8 * 7.2)

   Simplify each fraction: (-0.5 * 7.2 - 0.125 * 7.2)

   (-3.6 - 0.9)

   -4.5

2. Next, multiply by (-7, 2^2) / 2: (-4.5 * (-7, 2^2) / 2)

   7, 2^2 is equal to 7.2^2 = 7.2 * 7.2 = 51.84

   (-4.5 * 51.84 / 2)

3. Finally, perform the last multiplication: (-4.5 * 51.84) / 2

   -232.68 / 2

   -116.34

The final result of the expression is -116.34.