cutiepie5878
contestada

1) Simplify 9 - {x - (7 + x)}

2) Simplify (-5) + (-4) + (7).

3) Evaluate A^2 for A = -3.

4)Simplify and determine the coefficient of (-1/3x)(3y)(-2x).

5)Evaluate 5x3 + 2 for x = -1.

Respuesta :

texaschic101
1. 9 - { x - (7 + x)}
    9 - { x - 7 - x}
    9 - { -7}
     9 + 7
       16 <===

2 (-5) + (-4) + 7 =
    -5 - 4 + 7 =
      -9 + 7 =
        -2 <==

3. A^2....when A = -3
   (-3)^2 =
    -3 * -3 =
     9 <==

4. (-1/3x)(3y)(-2x) =
    (-1/3*3*-2)(xyx) =
     (-1*-2)(x^2y) =
        2x^2y....the coefficient is 2

5. 5x^3 + 2.....when x = -1
    5(-1^3) + 2 =
    5(-1) + 2 =
     -5 + 2 =
      -3 <==
Mariyah18
the answer is given above
Ver imagen Mariyah18

Otras preguntas