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Readme [11.4K]
3 years ago
12

Really need help. Answer following questions

Mathematics
1 answer:
Shalnov [3]3 years ago
8 0
1. Yes x^2 + 4x + 4 - 4 + 3 = 0 is still equivalent to x^2 + 4x + 3 = 0 since whilst we have added a 4 to the function, we have also subtracted a 4, and since +4 - 4 = 0, we haven't actually changed the value of the equation

2. -1 is the sum of -4 and 3

3. (x + 2)^2 - 1 = (x + 2 + sq.root of 1)(x + 2 - sq.root of 1)
= (x + 2 + 1)(x + 2 - 1)
= (x + 3)(x + 1)
(x + 3)(x + 1) = 0
x = -3 or x = -1

Hope that makes sense :)
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Answer:

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Step-by-step explanation:

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3 years ago
200 + 10x = 120 + 15x now solve the equation to find x, the number of hours that both companies will charge the same ammount
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Answer:

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Step-by-step explanation:

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2 years ago
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nignag [31]
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