What is the answer to |x^2-7x-9|-9=0 ?

The answer to |x^2-7x-9|-9=0 is x=-2\lor x=0\lor x=7\lor x=9

Solve for x: |x^2-7x-9|-9=0

The solution is x=-2\lor x=0\lor x=7\lor x=9

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x^{2} - 7 x - 9 - 9 = 0

x = - 2 or x = 0 or x = 7 or x = 9

Solution steps

x^{2} - 7 x - 9 - 9 = 0

Move

9

to the right side

x^{2} - 7 x - 9 = 9

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

x^{2} - 7 x - 9 = - 9 or x^{2} - 7 x - 9 = 9

x^{2} - 7 x - 9 = - 9 or x^{2} - 7 x - 9 = 9

(x = 0 or x = 7) or (x = - 2 or x = 9)

x = - 2 or x = 0 or x = 7 or x = 9

∣ x - 5 ∣ = x^{2} - 8 x + 15

∣ 10 x - 5 ∣ = - 65

9 + ∣ 7 x - 3 ∣ = \frac{2}{5}

y, ∣ x - y ∣ = ∣ y - x ∣

- ∣ x - 2 ∣ + 3 = 0

What is the answer to |x^2-7x-9|-9=0 ?
The answer to |x^2-7x-9|-9=0 is x=-2\lor x=0\lor x=7\lor x=9
Solve for x: |x^2-7x-9|-9=0
The solution is x=-2\lor x=0\lor x=7\lor x=9