Question 498372
if f(x)= sqrt(x-4-3x), find f(4), f(8), and f(13)
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Sub the values for x:
f(x) = sqrt(-4-2x)
f(4) = sqrt(-4-2*4) = sqrt(-12) = 2sqrt(-3)
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f(8) = sqrt(-4-2*8) = sqrt(-20) etc