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

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:

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