jimoh750 jimoh750
  • 04-06-2020
  • Mathematics
contestada

a) the quadratic x^2-4x-21 can be written in the form (x+a)^2+b find the values of and and b

b) hence, or otherwise, solve the equation x^2-4x-21=0

Respuesta :

maxl14 maxl14
  • 04-06-2020
Part a. A=-2. B=-25
Part b solutions; x=7 x=-3
Ver imagen maxl14
Answer Link

Otras preguntas

what is photosynthesis
Who is a foreign athlete an what does he?her play?
Write a + - x or ÷ sign in each box to make the equation true 7 18 45 3 2 = 139
what is q+5/9=1/6 what is q
Which modern Mediterranean country was the center of the Roman Empire? Tunisia (Carthage) Egypt Greece Italy
A quadratic equation can be written in vertex form or in standard form. Sometimes one form is more beneficial than the other. Identify which form would be more
Clouds form from rising water vapor at which step in the water cycle?
Which statement correctly describes the Maya calendar? A. It was based on the movements of the sun, moon, and stars. B. It developed from the Chavín and Moche c
PLZ HELP ASAP!!!!! if pic doesn't come thru refresh the page!
Mark the statement that is not true. The president is also known as the chief executive. The executive department is divided into 15 divisions. The executive