Answer:
We first must determine the coefficients
a = 1
b = 7
c = -20
Then we use the quadratic formula:
x = [-7 +- sqr root (7^2 - 4 * 1 * -20)] / 2 * 1
x = [-7 +- sqr root (129)] / 2
x1 = 4.3578166916 / 2
x1 = 2.1789083458
x2 = -18.3578166916 / 2
x2 = -9.1789083458
Step-by-step explanation:
D, 30%
you move the decimal point twice to the right
The answer it 5 x 10^-2!
Answer: 31824010600
Step-by-step explanation: 3182400060 tens and 100 hundreds = 31824010600.
