kyraanne30 kyraanne30
  • 01-10-2020
  • Mathematics
contestada

Solve the simultaneous equations y= 2x
y=x^2-4x+8

Respuesta :

Ukmmmmm
Ukmmmmm Ukmmmmm
  • 01-10-2020

Answer:

x =  4

Step-by-step explanation:

y = 2x , y = x^2 -4x +8

=> 2x = x^2 - 4x + 8

6x - x^2 - 8 = 0

(-x^2 + 2.3x - 3^2 ) -1 = 0

( -x-3)^2 - 1= 0

(-x-3)^2 = -1

(-x-3)^2 = (-1)^2

-x - 3 = 1

x =  4

Answer Link

Otras preguntas

decrease 64 by 60% what's the answer
Amanda reads 15 pages of her 150 page book in 2 hours at this rate how long will it take her to read the entire book
Given the balanced equations representing two chemical reactions:Cl2 + 2NaBr ---> 2NaCl + Br2 2NaCl---> 2Na + Cl2 Which types of chemical reactions are re
describe how supply-side fiscal policy can be used to stimulate the economy
Which ion is most easily reduced?(l ) Zn2+ (2) Mg2+ (3) Co2+ (4) Ca2+
I am struggling hard out with linear algebra in math level one
In which type of chemical reaction do two or more reactants combine to form one product, only? (1) synthesis (2) decomposition (3) Single replacement(4) double
how do you find missing angles
What is a simple life cycle of a bird?
what is 2 3/8 as a percent