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yKpoI14uk [10]
3 years ago
9

A) all fraction B) all integers C)all real numbers D) all positive real numbers

Mathematics
1 answer:
rjkz [21]3 years ago
7 0
C) all real numbers
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The measure of the quality of a person's life based on income and the type and quantity of goods available to him or her is
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Complete the statements below that show y = x2 + 2x - 1 being converted to vertex form. Form a perfect-square trinomial. y = x2
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Solution: The needed answer for first blank is 1 and the needed a for second blank is 1.

Explanation:

The given equation is y=x^2+2x-1.

The form of perfect square is (x+y)^2=x^2+2xy+y^2.

The given equation can be written as y=(x^2+2x)-1.

To make the perfect square we can add or subtract (\frac{b}{2a})^2 in the given equation. Where, a is coefficient of x^2 and b is coefficient of x. In the parenthesis the coefficient of x^2 is 1 and coefficient of x is 2.

(\frac{b}{2a})^2=(\frac{2}{2(1)})^2=1

So, the given equation is written as y=(x^2+2x+1)-1-1

y=(x+1)^2-2

Therefore, the needed answer for first blank is 1 and the needed a for second blank is 1.

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