3 years ago

' X (8 X 9) .8 gm X 8 '7

Mathematics

1 answer:

ella [17]3 years ago

8 0

The answer is 40 because the 5×8=40 and the rest cancel out

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Choose one of the factors of x^3 + 343.

Debora [2.8K]

First, note that $343=7^3.$ Then use the formula for the sum of perfect cubes:

$a^3+b^3=(a+b)(a^2-ab+b^2).$

Therefore,

$x^3 + 343=x^3+7^3=(x+7)(x^2-7x+49).$

The quadratic trinomial $x^2-7x+49$ couldn't be factored anymore, so the expression $x^3 + 343$ has two factors $x+7$ and $x^2-7x+49.$

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3 years ago

Which expression is equivalent to 8 -(6r+2)

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▹ Answer

▹ Step-by-Step Explanation

8 - (6r + 2)

8 - 2(3r + 1)

2(4 - (3r + 1))

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2(3 - 3r)

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Hope this helps!

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4 years ago

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Step-by-step explanation:

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3 years ago