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3 years ago

How do i simplify this

Mathematics

1 answer:

LekaFEV [45]3 years ago

6 0

Answer:

60a - 72ab

Step-by-step explanation:

B and C do not work because there is no "c" in the expression

-3(-4a[0-6b+5])

-3(-4a[5-6b])

-3(-20a+24ab)

60a - 72ab

None of the given choices are correct.

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Please help! Will give the brainiest!!

Eduardwww [97]

Answer:

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Step-by-step explanation:

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2 years ago

295 times 67 long multiplication

Fittoniya [83]

19,765 but couldnt u just use a calculator??

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3 years ago

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If a = √3-√11 and b = 1 /a, then find a² - b²

Serga [27]

If $b=\frac1a$ , then by rationalizing the denominator we can rewrite

$b = \dfrac1{\sqrt3-\sqrt{11}} \times \dfrac{\sqrt3+\sqrt{11}}{\sqrt3+\sqrt{11}} = \dfrac{\sqrt3+\sqrt{11}}{\left(\sqrt3\right)^2-\left(\sqrt{11}\right)^2} = -\dfrac{\sqrt3+\sqrt{11}}8$

Now,

$a^2 - b^2 = (a-b) (a+b)$

and

$a - b = \sqrt3 - \sqrt{11} + \dfrac{\sqrt3 + \sqrt{11}}8 = \dfrac{9\sqrt3 - 7\sqrt{11}}8$

$a + b = \sqrt3 - \sqrt{11} - \dfrac{\sqrt3 + \sqrt{11}}8 = \dfrac{7\sqrt3 - 9\sqrt{11}}8$

$\implies a^2 - b^2 = \dfrac{\left(9\sqrt3 - 7\sqrt{11}\right) \left(7\sqrt3 - 9\sqrt{11}\right)}{64} = \boxed{\dfrac{441 - 65\sqrt{33}}{32}}$

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1 year ago

Find all the powers of 4 in the range of 1000

Nikitich [7]

4 to the 1st is 4
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4 to the 3rd is 64
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3 years ago

PLs HeLP !!! multiply (-8) x 11

DochEvi [55]

Answer:

-88

Step-by-step explanation:

11*8=88 put the negative sign with it and you get -88

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3 years ago

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