lili423t lili423t
  • 22-03-2020
  • Mathematics
contestada

Solve x2 − 7x = −13.

Respuesta :

igoroleshko156
igoroleshko156 igoroleshko156
  • 22-03-2020

Answer:

[tex]\frac{7+\sqrt{-3} }{2} \\\\\frac{7-\sqrt{-3} }{2}[/tex]

Step-by-step explanation:

Step 1:  Use the Quadratic formula to solve

[tex]x^2 - 7x = -13[/tex]

[tex]x^2 -7x+13 = -13 +13[/tex]

[tex]x^2-7x+13=0\\[/tex]

[tex]\frac{-b+\sqrt{b^2-4ac} }{2a} \\\frac{-b-\sqrt{b^2-4ac} }{2a}[/tex]

[tex]\frac{-(-7)+\sqrt{(-7)^2-4(1)(13)} }{2(1)} \\\frac{-(-7)-\sqrt{(-7)^2-4(1)(13)} }{2(1)}[/tex]

[tex]\frac{7+\sqrt{49-52} }{2} \\\\\frac{7-\sqrt{49-52} }{2}[/tex]

Answer:  [tex]\frac{7+\sqrt{-3} }{2} \\\\\frac{7-\sqrt{-3} }{2}[/tex]

Answer Link

Otras preguntas

sophia exerts a steady 40n horizontal force on a 8kg resting on a lab bench. the box slides against a horizontal friction of 24n. show that the box accelerates
How many tablespoons are in 1 gill?
When light waves first enter the eye, they first pass through this transparent layer where they are refracted
Both Todd and Zack earn the same salary. Todd spent $716 and Zack spent $128. Then Zack had 4 times the amount of money Todd had left. How much is their salary?
What happens to carbohydrates during cellular respiration?
what is abstract for goo slime
Contrast situations where work is done with different amounts of force to situations where no work is done such as standing still???
Make the word "upheaval" in a complete sentence
Help plz. What Does "All Roads Lead to Rome" Mean?
Explain how Earth's magnetic field and ozone layers protect it .