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VikaD [51]
3 years ago
5

Please Help,This is hard. If you could do it step by step that would be Great :)​

Mathematics
2 answers:
Anna11 [10]3 years ago
8 0

A. Bc a negative times a negative would be positive

C. Bc it would equal 0 and zero is not negative.

1*-7=-7 it wants a negative value so times it by one keeps it negative and same with if it is Multiplied by 7

inysia [295]3 years ago
8 0

Answer:

A) \displaystyle -3

Step-by-step explanation:

Attaching a double negative will make the result POSITIVE in an instant.

I am joyous to assist you anytime.

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Y = x^2+ 7x - 5 can be written in the form y = (x + a)^2+b
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The equation of a parabola in vertex form is

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Given y = x² + 7x - 5

To express in vertex form use the method of completing the square

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y = (x + \frac{7}{2} )² - \frac{49}{4} - \frac{20}{4}

y = (x + \frac{7}{2} )² - \frac{69}{4}

Hence

a = \frac{7}{2} and b = - \frac{69}{4}

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