SOLUTION: solve the equation x^2+4x-45=0
a. x=15 and x=30
b. x= 9 and x=-5
c. no solution
d. x=-9 and x=5
I think its c but I just need to make sure I am doing this right
Algebra ->
Polynomials-and-rational-expressions
-> SOLUTION: solve the equation x^2+4x-45=0
a. x=15 and x=30
b. x= 9 and x=-5
c. no solution
d. x=-9 and x=5
I think its c but I just need to make sure I am doing this right
Log On
Question 631727: solve the equation x^2+4x-45=0
a. x=15 and x=30
b. x= 9 and x=-5
c. no solution
d. x=-9 and x=5
I think its c but I just need to make sure I am doing this right Answer by htmentor(1343) (Show Source):
You can put this solution on YOUR website! x^2 + 4x - 45 = 0
This equation can be factored as
(x-5)(x+9) = 0 [check for yourself]
This gives two solutions, x = 5, x = -9, so the answer is d.
The graph below shows the two zero crossings:
