tomerayash69 tomerayash69

04-02-2024
Mathematics

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One of the solutions to the equation 5x^2+b x+12 = 0 is − 4/5. Find the value of b .

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jsimpson11000 jsimpson11000

04-02-2024

Answer:

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Step-by-step explanation:

If one of the solutions is - 4/5....put that value in for 'x' to compute 'b'

5 (-4/5)^2 + (-4/5) b +12 = 0

80/25 + 12 = 4/5 b

5/4 ( 80/25 + 12 ) = b = 19

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