A quadratic equation is an equation of the form ax^2 + bx + c =0.
Given the equation: -2 = -x + x^2 - 4, we write it in the form of a standard quadratic equation as follows:
x^2 - x - 4 + 2 = 0
x^2 - x - 2 = 0
Comparing this with the standard quadratic equation gives that a = 1, b = -1 and c = -2
Therefore, the correct substitution of the values of a, b and c from the given equation into the quadratic formular is: <span>x = [-(-1) + or - sqrt((-1)^2 - 4 x 1 x -2)] / (2 x 1)</span>
Answer:
5 units
Step-by-step explanation:
If you look at AC that has 4 units and DE is close to 4 units but a little bigger by a unit
3 log x - 2 log y
log x³ - log y²
log x³ / y²
_______________________
1/2 log b 15 + 1/2 log b x
log b √15 + log b √x
log b (√15*√x)
log b √(15x)
Answer:
x=18
Step-by-step explanation:
y²+y²=(9√(2))²
2y²=81*2
y²=162/2
y²=81
y=9
hypotenuse: 2y=x 2*9=18
x=18