The measures of angle def are in the ratio 2: 4: 4. what are the measures of the angles?

Total units of ratio = 2+4+4 = 10

value of 1 unit = 180/10 = 18

angles would be: 2(18), 4(18), 4(18) = 36, 72 & 72

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  

1 and 2

step-by-step explanation: