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

How does the volume of a prism change if each dimension of the prism is doubled?
How do you " find, to the nearest tenth of an inch, the diagonal of a square whose perimeter is 28 inches ?"
mr. harper had 506 apples at his fruit stand. his freind gave him 87 more apples,and he bought another 59 apples. how many does he have all together? buy using
About how tall should you be at age 12, about in 7th grade. And how about weight?
How do you " find, to the nearest tenth of an inch, the diagonal of a square whose perimeter is 28 inches ?"
What were the provisions of the Proclamation of 1763?
I have 4 sides and 4 vertices,what am I
How did americans react to the events in Europe and asia in the early world war 2?
What does du bist mean in German?
the square root of 49 is how much less than four squared