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The idea is to replace every "x" by "3", and then do the calculations.

Q: What is f of x equals x to the 4th power minus 5x if f equals 3?

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That factors to 5(x - 4)(x + 4)(x2 + 16)

5x - 8 = 717 5x = 725 x = 725/5 x = 145

x= -11

It is: y = -1/5x-2

7-5x=10-(6x+7) 7-5x=-60x-70 +5x +5x 7=-55x-70 +70 +70 77=-55x Divide -55 -1.4 = x

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That factors to 5(x - 4)(x + 4)(x2 + 16)

X= 2!

which of the following is a factor of x2 - 5x - 6

5/2

5x - 8 = 717 5x = 725 x = 725/5 x = 145

x= -11

If you mean: 5x/7 -6 = x then x = -21

It is: y = -1/5x-2

(2x - 7)(x + 1)

7-5x=10-(6x+7) 7-5x=-60x-70 +5x +5x 7=-55x-70 +70 +70 77=-55x Divide -55 -1.4 = x

Slope = 5/3 = 1.66...