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:
7x + 14
Step-by-step explanation:
Any answer less than one would work, soothe answers are A and D
Answer: 200 times larger
Explanation (6*10^5)/(3*10^3)=2*10^2
2*100=200
The other answer was wrong because in order of operations (PEMDAS), exponents come before multiplication.
