Question

o zero da funçõe como è
y=x+5x-24

Answer 1

Mirelly,
Vamos passo a passo

x^2 +5x - 24 = 0

   fatorando
       (x + 8)(x - 3) = 0
   cada fator nulo

             x + 8 = 0
                               x1 = - 8
             x - 3 = 0
                               x2 = 3
                                                   S = {- 8, 3}

Answer 2

O Zero da função, consiste em aderir que F(x) = 0, ou seja y=0. 

y= x²+5x-24 
0=x²+5x-24 
x²+5x-24=0

POR BHASKARA, TEMOS: 

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

a= 1 
b= 5
c= -24

$x=\frac{-5 \pm \sqrt{5^2-4.1.-24}}{2.1}$

$x=\frac{-5 \pm \sqrt{25+96}}{2}$

$x=\frac{-5 \pm \sqrt{121}}{2}$

$x=\frac{-5 \pm 11}{2}$

$x'=\frac{-5 + 11}{2} = \frac{6}{2} = \boxed{3}$

$x=\frac{-5 - 11}{2} = - \frac{16}{2} = \boxed{-8}$

$\bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar \bigstar$