Answer:
hi
Step-by-step explanation:
Answer:
-4 ± 2√6
Step-by-step explanation:
Rewritten in standard quadratic form, x^2+8x-2=18 becomes x^2 + 8x - 20 = 0.
Here the quadratic coefficients are a = 1, b = 8 and c = -20 and so the discriminant is b^2 - 4ac, or 8^2 - 4(1)(-20), or 96.
Because the discriminant is positive, we know that this quadratic has two different real roots. These roots are:
-b ± √(b² - 4ac)
x = -------------------------
2a
which in this case comes out to:
-8 ± √96 -8 ± 4√6
x = ------------------ = ------------------- = -4 ± 2√6
2 2
Answer:
x=4+(19)^1/2,x=4-(19)^1/2
Step-by-step explanation:
Answer:
32.61° is the answer
Step-by-step explanation:
Tanx=17.6/27.5
First we simplify like terms:
4x-2x+1/2-5/7=1/2-x
2x-3/14=1/2-x
Then you add x to both sides to get everything with the variables together.
3x-3/14=1/2
Finally, you add 3/14 to both sides for the same reason.
3x=10/14 (simplifies to 5/7)
Then we divide by 3 to get x alone.
x=5/21
