Question

cuanto es 1. (-2)(-5)(-7)(8) ,2. (4)(-7)(8)-5), 3. (7)(-2)(7)(5) y 4. (5)(8)(-2)(-9)

Answer 1

1) -560
2) 1120
3)-490
4)-720

Answer 2

( - 2 )(- 5 )(-7 )(8) =
( 10)(- 56) = - 560

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(4)(- 7)(8)-5) =
(-28) ( 8) - 5) =
- 224 - 5 = - 229

(4)(-7)(8)(-5) =
(-28) (- 40) = 1120
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(7)(- 2)(7)(5) =
( - 14) (35) = - 490

(5)(8)(- 2)(-9) =
(40) (18) = 720