Two numbers added together equal negative four. The same two numbers have a product of negative twelve.
What are the two numbers? -2 and -6 is this right
4 answers
close ... the two is positive
So the answer would be 2 and -6
yes
Eq1: x+y = -4.
Eq2: x*y = -12.
x = -12/y.
In Eq1, replace X with -12/y and solve for Y:
-12/y + y = -4.
-12 + y^2 = -4y,
y^2 + 4y - 12 = 0, -12 = -2*6. sum = -2+6 = 4 = B.
y - 2 = o, Y = 2. (x, y) = (-6, 2).
y + 6 = 0, Y = -6. (2, -6).
So the numbers are 2, and -6.
Eq2: x*y = -12.
x = -12/y.
In Eq1, replace X with -12/y and solve for Y:
-12/y + y = -4.
-12 + y^2 = -4y,
y^2 + 4y - 12 = 0, -12 = -2*6. sum = -2+6 = 4 = B.
y - 2 = o, Y = 2. (x, y) = (-6, 2).
y + 6 = 0, Y = -6. (2, -6).
So the numbers are 2, and -6.
1 answer