What is the answer and answer it completely

3 + 2(x + 4)(x - 4)

3 + 2(x^2 - 4x + 4x - 16)

3 + 2(x^2 - 16)

3 + 2x^2 - 32

2x^2 - 29

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  21.3

step-by-step explanation:

multiplying the given equation by c/sin(25°), we get

  c = 9/sin(25°) ≈ 21.2958 ≈ 21.3

we assume "c" is the length of ab, the side opposite angle c in triangle abc.

d (5 x (-20)) * (100 x (0.7))

step-by-step explanation:

5÷1/100 * -.7 *-20

copy dot flip

5*100 * -.7 *-20

rearrange

5*-20   * 100 *-.7

-100   *-70

7000