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3 years ago

Which expression is equivalent to 64x^3-343

Mathematics

1 answer:

In-s [12.5K]3 years ago

4 0

Answer:

B: (4x - 7)(16x^2 + 28x + 49)

Step-by-step explanation:

64x^3-343 can be rewritten as 4^3x^3 - 7^3 or (4x)^3 - 7^3. This is the difference of two cubes. The appropriate formula for factoring such is

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

our (4x)^3 - 7^3 = (4x - 7)(16x^2 + 28x + 49). This is Answer B.

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cluponka [151]

The given expression $8(4)^2+2^4$ is equal to 144 or $12^2$

<em><u>Solution:</u></em>

Given expression is:

$8(4)^2+2^4$

We have to evaluate the above given expression

We know that,

$(4)^2 = 4 \times 4 = 16$

$2^4 = 2 \times 2 \times 2 \times 2=16$

Substituting these in above given expression, we get

$8(4)^2+2^4=8 \times 16+16\\\\8(4)^2+2^4= 128+16\\\\8(4)^2+2^4=144$

Also we know that,

$12 \times 12 = 144$

Therefore,

$8(4)^2+2^4=144 = 12 \times 12 = 12^2$

Thus the given expression $8(4)^2+2^4$ is equal to 144 or $12^2$

7 0

4 years ago

You buy 3 pairs of shoes for $300 how much does one pair of shoes cost

Mnenie [13.5K]

Answer:

Each pair costs $100

Step-by-step explanation:

1. 300 / 3

2. ANS= 100 per pair of shoes

I hoped this helped! Comment if you have any questions :)

4 0

3 years ago

Read 2 more answers

Hiii please help i’ll give brainliest if you give a correct answer tysm!

taurus [48]

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Reason - following the sequence

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Can a given line be in two planes? In ten planes?

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