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3 years ago

Subtract. Write your answer in simplest form. 2-1/4

Mathematics

2 answers:

timurjin [86]3 years ago

7 0

2-1/4 is just 2. (-1/4)

And it is equals to -1/2

Vika [28.1K]3 years ago

4 0

I think the answer should be 1.75 and here’s my work

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3 years ago

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PLEASE HELP !!! which choices are equivalent to square root of -4???

Jet001 [13]

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Step-by-step explanation:

just a guess but it's right

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2 years ago

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X² - 6x + 4 = 0<br><br> solve and show work. ...?

ycow [4]

The answer is 3 + √5 and 3 - √5.

This is quadratic equation: x² - 6x + 4 = 0
The general quadratic equation is ax² + bx + c = 0
Our equation can be rewritten: 1x² + (-6)x + 4 = 0
So, in our equation we have: a = 1, b = -6, c = 4

Now, x can be calculated using the formula: $x_{1,2}= \frac{-b+/- \sqrt{ b^{2}-4ac } }{2a}$
$x_{1,2} =\frac{-(-6)+/- \sqrt{ (-6)^{2}-4*1*4 } }{2*1} = \frac{6+/- \sqrt{36-16} }{2} = \frac{6+/- \sqrt{20} }{2} =\frac{6+/- \sqrt{4*5} }{2}= \\ 
=\frac{6+/- \sqrt{4}* \sqrt{5} }{2} =\frac{2*3+/- 2\sqrt{5} }{2}= \frac{2(3+/- \sqrt{5}) }{2} =3+/- \sqrt{5}$

From here:
$x_{1} =3+ \sqrt{5} \\ 
x_{2} =3- \sqrt{5}$

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4 years ago