trankhanh261008 trankhanh261008
  • 15-08-2021
  • Mathematics
contestada

tìm x a)
4x^2-12x=-9

Respuesta :

redbudtree84 redbudtree84
  • 15-08-2021

Hi

Just told you :  first know by heart remarkable identities !  

Then apply :  

4x²-12x = -9

4x²-12x +9 =0

(2x-3)² = 0

(2x-3) (2x-3)  = 0

Now you have a double solution :

2x-3 = 0

and 2x -3 = 0

I let you try !

Answer Link

Otras preguntas

what Percentage of algae uses photosynthesis to make their own food
Don carried a 2 oz bag containing some marbles weighing 9.4 oz each. Jamie carried a 1 oz bag containing the same number of marbles weighing 11.2 oz each. Let m
Factor out the coefficient of the variable 2/3 j - 2/9
how would an increase in the population affect the aquifer
a biotic or an abiotic resource in the environment that causes population size decrease is
The endosymbiotic theory provides an explanation for the origin of chloroplasts. Which trait of chloroplasts supports this explanation?
marissa, john, and stephanie are working a 3- hour shift together. Marissa has an alarm on her phone that goes off every 12 minutes. John's phone alarm goes off
O2 +C8H18--> H2O + CO2
85% of what number is 10.2
What is the answer to the fraction 6 5/8-4 2/9