Consider the function f(x)=x^2+2x-15.what are the x-intercepts of the function?
1 answer:
Answer:
x=3 and x= -5
Step-by-step explanation:
x^2+2x-15
Find the numbers that can be multiplied to equal the last term and added to equal the second term: x^2+5x-3x-15
Factor: x(x+5)-3(x+5)
Then you get: (x-3)(x+5)=0
Answer: x=3 and x=-5
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