What is the difference between 75,650 7,056

1 answer:

3 0

There is a you put a 6 in the hundredth place which makes it 650 and in the our one you put the 6 in the ones place which makes it 56

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-2 (3x - 4)= -6x - 8 true or false

Mazyrski [523]

<span>False.
-2(3x - 4) distributes to become -6x + 8
Thus, it is easy to tell it is false:

-2(3x - 4)= -6x - 8
-6x + 8 = -6x - 8
Add 6x to both sides;
8 </span>≠<span> -8</span>

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3 years ago

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Expand and simplify (3m-2n)²

oee [108]

Answer:

9m^2 - 12mn + 4n^2

Step-by-step explanation:

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Solve for x: 2(x + 3)2 − 4 = 0

asambeis [7]

Answer:

Option D) x = −4.41, −1.59

Step-by-step explanation:

We are given the following expression in the question:

$2(x + 3)^2 - 4 = 0$

Solving the above expression, we get:

$2(x + 3)^2 - 4 = 0\\2(x^2+9+6x)-4=0\\\text{Identity: }(a+b)^2 = a^2 + b^2 + 2ab\\2x^2+18+12x-4=0\\2x^2+12x+14=0\\\text{Using the quadratic formula:}\\ax^2 + bx +_ c = 0\\\\x = \displaystyle\frac{-b\pm \sqrt{b^2-4ac}}{2a}\\\\\text{Puting a = 2, b = 12, c = 14}\\\\x = \displaystyle\frac{-12\pm \sqrt{(12)^2-4(2)(14)}}{2(2)}\\\\x = \frac{-12 \pm 5.65}{4}\\\\x = \frac{-12 + 5.65}{4}, \frac{-12-5.65}{4} = -1.5875, -4.4125 \approx -1.59, -4.14$