SOLUTION: This question deals with Quadratic Inequalities and rational inequalities. The question reads: x^2+4x>21. 4x and 21 do not evenly distribute so unsure how to solve this.

SOLUTION: This question deals with Quadratic Inequalities and rational inequalities. The question reads: x^2+4x>21. 4x and 21 do not evenly distribute so unsure how to solve this.

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Question 278739: This question deals with Quadratic Inequalities and rational inequalities. The question reads: x^2+4x>21. 4x and 21 do not evenly distribute so unsure how to solve this.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
x^2 + 4x - 21 > 0

factoring ___ (x + 7) (x - 3) > 0

for the product to be >0, either both factors are >0 or both factors are <0

for both >0 ___ x > 3

for both <0 ___ x < 7

so, (x < 7) OR (x > 3)
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