Knowee
Questions
Features
Study Tools

b.  x2+13x+40=0𝑥2+13𝑥+40=0 Type the answer in the box below.x=𝑥=   or   x=𝑥=  Show your reasoning.

Question

b.  x2+13x+40=0𝑥2+13𝑥+40=0 Type the answer in the box below.x=𝑥=   or   x=𝑥=  Show your reasoning.

🧐 Not the exact question you are looking for?Go ask a question

Solution

Para resolver la ecuación cuadrática x2+13x+40=0x^2 + 13x + 40 = 0, podemos usar la fórmula general para ecuaciones cuadráticas, que es:

x=b±b24ac2a x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}

En esta ecuación, a=1a = 1, b=13b = 13 y c=40c = 40. Sustituimos estos valores en la fórmula:

  1. Calculamos el discriminante: b24ac=1324(1)(40)=169160=9 b^2 - 4ac = 13^2 - 4(1)(40) = 169 - 160 = 9

  2. Sustituimos el discriminante en la fórmula general: x=13±92(1) x = \frac{-13 \pm \sqrt{9}}{2(1)} x=13±32 x = \frac{-13 \pm 3}{2}

  3. Resolvemos para las dos posibles soluciones: x1=13+32=102=5 x_1 = \frac{-13 + 3}{2} = \frac{-10}{2} = -5 x2=1332=162=8 x_2 = \frac{-13 - 3}{2} = \frac{-16}{2} = -8

Por lo tanto, las soluciones de la ecuación son: x=5ox=8 x = -5 \quad \text{o} \quad x = -8

This problem has been solved

Similar Questions

b=at𝑏=𝑎𝑡; solve for t𝑡.

x2−6x−20=7𝑥2−6𝑥−20=7 Type the answer in the box below.x=𝑥=   or   x=𝑥=  Show your reasoning.

Solve the following equation, finding the value of 𝑥.4𝑥 + 4 = 40A. 𝑥 = 6B. 𝑥 = 9C. 𝑥 = 11D. 𝑥 = 14

Select the correct answerIf (𝟓𝒂−𝟑𝒃)∶(𝟒𝒂−𝟐𝒃)=𝟐∶𝟑 then a : b is equal to:

Which shows the equation below written in the form ax2 + bx + c = 0?x2 + 8x + 10 = 3A.x2 + 8x + 7 = 0B.x2 + 5x + 7 = 0C.x2 + 8x + 13 = 0D.x2 + 5x + 13 = 0SUBMITarrow_backPREVIOUS

1/3

Upgrade your grade with Knowee

Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.