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1 year ago

8fsquare + 4f - 60 its an math equation can anyone plz gimme the answer

Mathematics

1 answer:

hammer [34]1 year ago

6 0

Answer:

f = -3 , 5/2

Step-by-step explanation:

8f² + 4f - 60 = 0

Divide the entire equation by 4

2f² + f - 15 = 0

Product = -30

Sum = 1

Factors = -5 , 6 {(-5)*6 = -30 and -5 +6 = 1}

2f² + f -15 = 0 {Rewrite the middle term using the factors}

2f² + 6f - 5f -15 = 0

2f(f + 3) - 5(f + 3) = 0

(f +3) (2f - 5) = 0

f +3 = 0 ; 2f -5 = 0

f = -3 ; 2f = 5

f = 5/2

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2 years ago

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olga_2 [115]

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