ddira35
ddira35 ddira35
  • 02-02-2020
  • Mathematics
contestada


[tex]4(x - 1) {}^{2} - 9[/tex]
​

Respuesta :

LocalAskingMaster
LocalAskingMaster LocalAskingMaster
  • 02-02-2020

Step-by-step explanation:

(a-b)^2=(a^2-2*a*b+b^2)

4*(x^2-2x+1)-9=4x^2-8x+4-9=4x^2-8x-5

if you have to calculate the Δ

there is it: 4x^2-8x-5=0

Δ=b^2-4*a*c=64-4*4*(-5)=64+80=144

[tex]x_{1,2}=[/tex]-b±Δ/2*a=8±12/8=

[tex]x_{1}[/tex]=8+12/8=20/8|:4=5/2

[tex]x_{2}[/tex]=8-12/8=-4/8|:4=-1/2

Answer Link

Otras preguntas

what might a postitive number mean in thid content ,what about a negatuve number
need help with this pleaseeeeeeeeeeeeeeeeeeeeeeeeeReactants in photosynthesis
Allison spent $7.80 on lunch. That represents 6% of her daily net income. What is Allison's daily net income? Round your answer to the nearest penny if needed.
Find the answer for the 15th term given the sequence: Sn = 4n2 + 120The value of the 15th term = 1020Is it a true Or False statement
1. d decreased by three
Solve the following equationX-3(x+2)=4 X - 3 ( x + 2 ) = 4
In A DEF, what is the value of tan D? F 15 D 9 E
Question 3 of 8What is the length of CD?B15- Xс хр5E201Answer here
A boat takes 5 hr to go 25 mi upstream. It can go 50 mi downstream in the same time. Find the rate of the current and the rate of the boat in still water if x =
Find the volume of the circular cone picture below use 3.14 for pie. round your answer to the nearest whole number.