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Popular >

4(x-4)(x+5)<0

Solution

4 (x - 4) (x + 5) < 0

Solution

- 5 < x < 4

+1

Interval Notation

(- 5, 4)

Solution steps

4 (x - 4) (x + 5) < 0

Rewrite in standard form

x^{2} + x - 20 < 0

Factor

x^{2} + x - 20 : (x - 4) (x + 5)

(x - 4) (x + 5) < 0

Identify the intervals

- 5 < x < 4

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(x-2)(x+3)=(x+5)^2

(x - 2) (x + 3) = (x + 5)^{2}

simplify (-x)/y simplify

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Frequently Asked Questions (FAQ)

What is 4(x-4)(x+5)<0 ?
The solution to 4(x-4)(x+5)<0 is -5<x<4