Step-by-step explanation:
x^2 + 4x + 8 = (x^2 + 4x + 4) + 4 = (x + 2)^2 + 4.
When x^2 + 4x + 8 > 5, this means (x + 2)^2 + 4 > 5.
So (x + 2)^2 > 1.
=> (x + 2) > 1 or (x + 2) < -1.
=> x > -1 or x < -3.
Answer: the third answer
Step-by-step explanation:
did it online right now
Answer:
Yes, he made an error in Step 3. He should have subtracted 2 from both sides.
Step-by-step explanation:
You use Sarrus rule, and perform the following multiplications of diagonal items:
diagonals from left to right (using wrap around)
+14*8*5
+-13*-1*-10
+0*3*-2
diagonals from right to left are subtracted
-0*8*-10
--13*3*5
-14*-1*-2
is 560-130+0 - 0+195-28 = 597
Answer:
Choice D
Step-by-step explanation:
QS ≈ TR
they have same direction, sense and magnitude