Sabendo que uma equação de segundo grau tem raízes 3 e 1, qual das alternativas corresponde à essa equação?
a) x² - 4x – 3 = 0
b) x² + 4x + 3 = 0
c) x² - 4x + 3 = 0
d) x² + 4x – 3 = 0
e) x² - 3x + 4 = 0

a4 - 3a2 - 1

step-by-step explanation:

step   1   :

equation at the end of step   1   :

  ((a4) -   3a2) -   1

step   2   :

trying to factor by splitting the middle term

2.1     factoring   a4-3a2-1  

the first term is,   a4   its coefficient is   1 .

the middle term is,   -3a2   its coefficient is   -3 .

the last term, "the constant", is   -1  

i do not know the answer

step-by-step explanation:

the correct answer would be:

220 centimeters

to get this you can use the pythagorean theorem

hope this

step-by-step explanation: