1) it must be fulfilled that the denominator is different from zero, then for this expression
x^2 -9 ⇒ x^2-3^2 = (x-3)(x+3)⇒ (x-3)(x+3) = 0 ⇒ x = 3 o x = -3 , the dominium is all numbers reals except 3 and -3
Answer:
ab=1/12
Step-by-step explanation:
1/(4ab)+1/(3ab)-1/(2ab)=12
1/(ab)*[1/4+1/3-1/2]=1/12
1/(12ab)=1/12
ab=1
Potential roots have the format
factors of the constant term
-------------------------------------
factors of the initial term
Here, 7/3 is the only possible root that has a 7 in the numerator and a factor of 9 in the denominator.
Verify that 7/3 is a root using synthetic division.
Answer:
Angle BC, because 70+20 = 90
Step-by-step explanation:
If the trianles are congruent, the sum of three either angles would be equal to 180
so, 87+56+c = 180
c = 180-143
c = 37
SO OPTION C IS YOUR ANSWER....
