Asked by Marlene Diaz
What is the product of the solutions to the equation: x2+4x=-4
a. 80
b. -80
c. -20
d. 4
(I NEED TO KNOW WHO TO GET THE ANSWER PLEASE)
a. 80
b. -80
c. -20
d. 4
(I NEED TO KNOW WHO TO GET THE ANSWER PLEASE)
Answers
Answered by
Marlene Diaz
MS.SUE!
Answered by
Steve
x^2 + 4x + 4 = 0
(x+2)(x+2) = 0
the two solutions are -2 and -2, so their product is 4
In fact, for any quadratic
ax^2 + bx + c = 0
the product of the solutions is c/a, so you don't even need to find what the roots are.
(x+2)(x+2) = 0
the two solutions are -2 and -2, so their product is 4
In fact, for any quadratic
ax^2 + bx + c = 0
the product of the solutions is c/a, so you don't even need to find what the roots are.