silvahayleeAlise silvahayleeAlise
  • 04-04-2017
  • Mathematics
contestada

Use the quadratic formula to solve x2 + 7x + 8 = 0. Estimate irrational solutions to the nearest tenth.

Respuesta :

wolf1728
wolf1728 wolf1728
  • 07-04-2017
x2 + 7x + 8
a = 1
b = 7
c = 8
x = [-b +-sq root (b^2 -4ac)] / 2a
x = [-7 +- sq root (49 -4*1*8)] / 2*1
x = [-7 +- sq root (49 -32)] / 2
x = [-7 +sq root (17)] / 2

x1 = [-7 +sq root (17)] / 2
x2 = [-7 -sq root (17)] / 2

x1 = -1.4384
x2 = -5.5616


Answer Link

Otras preguntas

solve the inequality and graph 6j - 7 < 5
Help with an American government question
simplify 3c+9c+4c-1=
Potrzebuje charakterystyke bilba bagginsa na Polski 200słów na wtorek prosze o jak najszybsza i nie skopiowaną odpowiedz
C or D⁉️ Help me please now
Kendra had twice as much money as kareem. Kendra later spent $8 and kareem earned $6. By then,the two had the same amount of money. How much money did each have
Which of these is a major trend in land plant evolution? A) the trend toward smaller size B) the trend toward a gametophyte-dominated life cycle C) the trend to
Microorganisms are involved in each of the following processes EXCEPTA. smog production.B. food production.C. infection.D. O2 production.E. decomposition of org
HELP ME PLEASE NOW!!!!
Solve the equation -9p - 17 =10 A -3 B. 16 C. 18 D -16