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storchak [24]
3 years ago
14

Simplify this expression: -2x+3 - (5 - 6x).

Mathematics
2 answers:
iVinArrow [24]3 years ago
8 0

-2x+3 - (5 - 6x)

pretend that there is a -1 in front of the bracket

mutiply the bracket by -1

(-1)(5)=-5

(-1)(-6x)= 6x

-2x+3-5+6x

-2x+6x+3-5 ( combine like terms)

Answer: 4x-2

Vilka [71]3 years ago
7 0

Answer:

4x-2 for plato

Step-by-step explanation:

the guy above is correct so give him brainliest, im just supporting the fact that hes correct and i got a 100% on my plato quiz from him.

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3 years ago
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Which equation of the solutions of x2 = -7x – 8
timama [110]

Answer:

x = 1, -5.56

Step-by-step explanation:

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shift -7x and -8 to the other side . Remember when u shift minus changes into plus.

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using quadratic equation formula

in quadratic equation one value comes positive and other comes in negative

a = 1  , b = 7 and c = 8

taking positive sign

x = (-b + \sqrt{b^2 - 4*a*c}) /2*a

x = (-7 + \sqrt{7^2 - 4*1*8} ) /2*1

x = (-7 + \sqrt{49 + 32} ) /2

x = (-7 + \sqrt{81} )/ 2

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x = 1

taking negative sign

(-b - \sqrt{b^2 - 4*a*c} ) /2*a

x = (-7 - \sqrt{7^2 - 4*1*8} ) /2*1

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x = -7 - \sqrt{17} / 2

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4 0
3 years ago
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