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3 years ago

What are the solutions to. x^2 - x - 20 = 0

Mathematics

1 answer:

nignag [31]3 years ago

3 0

Step-by-step explanation:

x² - x - 20 = 0

x² - (5-4) x - 20 = 0 

x² - 5x + 4x -20 = 0

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

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

Either. 

x - 5 = 0

x = 5

Or, 

x + 4 = 0 

x = -4

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3 years ago

sally gave her brother 3.95 in quarters and dimes. if the number of quarters is 6 more then the number of dimes, how many quarte

iragen [17]

Let q be the number of 25 cent coins.
Let d be the number of 10 cent coins.
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(2)-> q-d= 6
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3 years ago

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2 years ago

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Hi! :)

It sounds like you need to multiply this fraction.

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3 years ago

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To know more about probability go to - https://brainly.in/question/17157610?msp_poc_exp=6

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1 year ago

Read 2 more answers