What is the answer to |3x^2-20|=7 ?

The answer to |3x^2-20|=7 is x=-3\lor x=-sqrt(13/3)\lor x=sqrt(13/3)\lor x=3

Solve for x: |3x^2-20|=7

The solution is x=-3\lor x=-sqrt(13/3)\lor x=sqrt(13/3)\lor x=3

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3 x^{2} - 20 = 7

x = - 3 or x = - \frac{13}{3} or x = \frac{13}{3} or x = 3

Decimal Notation

x = - 3, x = - 2.08166 \dots, x = 2.08166 \dots, x = 3

Solution steps

3 x^{2} - 20 = 7

Apply absolute rule: If

∣ u ∣ = a, a > 0

then

u = a

u = - a

3 x^{2} - 20 = - 7 or 3 x^{2} - 20 = 7

3 x^{2} - 20 = - 7 or 3 x^{2} - 20 = 7

(x = - \frac{13}{3} or x = \frac{13}{3}) or (x = - 3 or x = 3)

x = - 3 or x = - \frac{13}{3} or x = \frac{13}{3} or x = 3

x^{2} + x^{4}

2 x + 3 \geq 7

2 x^{2} - x y - 3 y^{2}

15 x^{2} + 4 x - 4

(- 87 + i) + (- 5 + 20 i)

What is the answer to |3x^2-20|=7 ?
The answer to |3x^2-20|=7 is x=-3\lor x=-sqrt(13/3)\lor x=sqrt(13/3)\lor x=3
Solve for x: |3x^2-20|=7
The solution is x=-3\lor x=-sqrt(13/3)\lor x=sqrt(13/3)\lor x=3