SOLUTION: Find the x intercepts of f(x)=x^2+4x-21 a.-3,0 and 7,0 b.-7,0 and 3,0 c.0,-3 and 0,7 d.-11,0 and 10,0

Algebra ->  Functions -> SOLUTION: Find the x intercepts of f(x)=x^2+4x-21 a.-3,0 and 7,0 b.-7,0 and 3,0 c.0,-3 and 0,7 d.-11,0 and 10,0      Log On


   

Question 137115: Find the x intercepts of f(x)=x^2+4x-21
a.-3,0 and 7,0
b.-7,0 and 3,0
c.0,-3 and 0,7
d.-11,0 and 10,0
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)=x^2+4x-21
+graph%28+300%2C+200%2C+-10%2C+5%2C+-25%2C+10%2C+x%5E2+%2B4x+-21%29+ (graph 300x200 pixels, x from -10 to 5, y from -25 to 10, x^2 +4x -21).
ANSWER B)-7 & 3