3 years ago

Solve the quadratic inequalities, by either graphing, or pure algebraic method:

Mathematics

1 answer:

BlackZzzverrR [31]3 years ago

6 0

Answer:

less than/equal to -2

Or, greater than/equal to 2.5

Step-by-step explanation:

2x² - x - 10 ≥ 0

2x² - 5x + 4x - 10 ≥ 0

x(2x - 5) + 2(2x - 5) ≥ 0

(x + 2)(2x - 5) ≥ 0

Roots: -2, 5/2

x《 -2 or x》5/2

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