The value of X in this equation would be -1.
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>
x = Kevin
y = Steve
Kevin: x = y+4
x+y = 26
y+4+y = 26
2y +4 =26
2y = 22
y = 22/2 =11
Steve ran 11 miles
Kevin ran 11+4 = 15 miles
15+11 = 26
Answer:
RULE 1: The product of a positive integer and a negative integer is negative.
RULE 2: The product of two positive integers is positive.
RULE 3: The product of two negative integers is positive.
Step-by-step explanation: