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If (x - 5) is a fac javascript, which of the following must be true?
O A root of f(x) is x = -5.
O A root of f(x) is x = 5.
O Both x = -5 and x = 5 are roots of f(x).
O Neither x = -5 nor x = 5 is a root of f(x).
LLL

  a root of f(x) is x=5

Step-by-step explanation:

If (x -5) is a factor of f(x), then ...

  a root of f(x) is x = 5

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A root is a value of x that makes f(x) = 0. If x-5 is a factor, then x=5 will make that factor zero. Anything multiplied by that factor will result in zero. Hence x=5 will be a root of f(x).

area of part 1:

a1=base*height/2=(8+2)*(8-2-2-1)/2=10*3/2=15 ft^2

area of part 2:

a2=length*width=(8+2)*1=10 ft2

area of part 3:

a3=length*width=8*2=16 ft2

total shaded area : a1+a2+a3=41 ft2

total area of the reactangle : a=16*8=128 ft2

total area of the nonshaded region : 128-41=87 ft2

false

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