2. what value(s) of x make the equation 2/x + 3) - 8 = x + 1 true? (2a.6e
a{-3, 5)
b{3}
c{-5, 3}
d{3, 5}

Solved

Show answers

Ответ:

kledi72

24.07.2022

Mathematics

$-7.60,\ -4.47$

Step-by-step explanation:

Given

f(x)=-1.3x^2-15.7x-44.2

The solution of the standard quadratic equation ax^2+bx+c=0 has solution

$x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

Applying the above principle

$\Rightarrow x=\dfrac{15.7\pm\sqrt{(-15.7)^2-4(-1.3)(-44.2)}}{2(-1.3)}\\\\\Rightarrow x=\dfrac{15.7\pm\sqrt{246.49-229.84}}{-2.6}\\\\\Rightarrow x=\dfrac{15.7\pm \sqrt{16.65}}{-2.6}\\\\\Rightarrow x=\dfrac{15.7\pm 4.08}{-2.6}\\\\\Rightarrow x=-7.60,\ -4.47$

The zeroes of the equation are -7.60, -4.47.

0,0(0 оценок)

Ask your question to the AI advisor

Ai-bot is an expert in any field and is the perfect companion for reliable and useful answers and advice on a variety of topics, including science, history, technology, art, sports, health, culture and more.

Ask your question

More tips

Answers on questions: Mathematics

Ask an AI advisor a question

I want advice

2. what value(s) of x make the equation 2/x + 3) - 8 = x + 1 true? (2a.6e a{-3, 5) b{3} c{-5, 3} d{3, 5}