step-by-step explanation:
divide, then simplify your answer.
1. make -15.66 ÷ 5.8 a fraction. then divide.
2. simplify.
3. final answer.
just sum
10 + 10 = 20
x² + 3x + 7 = 0 [ax² + bx + c]
a = 1
b = 3
c = 7
quadratic formula:
(+/- is this ±)
plug in the numbers into the variables
your answer is a