thenamesricky0 thenamesricky0
  • 06-04-2020
  • Mathematics
contestada

I have no clue can someone help please?

I have no clue can someone help please class=

Respuesta :

thwng
thwng thwng
  • 06-04-2020

Answer -7

Step-by-step explanation:

0 = x^2 + 4x - 21

0 = x^2 - 3x + 7x - 21

0 = x(x-3) + 7(x-3)

0 = (x - 3)(x + 7)

Therefore x - 3 = 0 or x + 7 = 0

so x = 3 or x = -7

Answer Link

Otras preguntas

How have humans influenced the rate of extinction?
Write an absolute value equation that has the given solutions x = -10 and x = -5
describe how an equal-arm balance is made and how it works
What did vaudeville shows consist of?
how can you work out 768 divided by 16
similarities between the magic prison and kaddo's wall
The movement of sodium ions from a region of lower concentration inside a cell toward a region of higher concentration outside the cell is accomplished by what
some of the difference between acting and interpreting include these
Six cousins inherited a total of 5/8 of their great aunt's assets, which they divided evenly. What fraction of their great aunt's assests did each cousin inheri
The average of your three quizzes grades is 17 points. Two of your quiz grades are 14 points and 19 points. Write and solve an equation to find the third quiz g