Answer:
Third option
Step-by-step explanation:
We can't factor this so we need to use the quadratic formula which states that when ax² + bx + c = 0, x = (-b ± √(b² - 4ac)) / 2a. However, we notice that b (which is 6) is even, so we can use the special quadratic formula which states that when ax² + bx + c = 0 and b is even, x = (-b' ± √(b'² - ac)) / a where b' = b / 2. In this case, a = 1, b' = 3 and c = 7 so:
x = (-3 ± √(3² - 1 * 7)) / 1 = -3 ± √2
can you please give me an example so that I can explain you
The correct answer is -70 if you substitute in -7 for c the equation will be = -63 -7 = -70
Answer:
Step-by-step explanation:
is given as the nth term of a sequence.
We want to find 
, which means we find the 7th term of the sequence.
Here, we simply substitute "7" into "n" of the formula given for to find the value of the 7th term of the sequence.
We show this below:
So the 7th term is "-15"
Answer:
16
Step-by-step explanation:
f(x) = 2x + 4
f(6) = 2(6) + 4
=> f(6) = 12 + 4
=> f(6) = 16
