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harkovskaia [24]
3 years ago
13

Prove for any value of y the value of expression y^4−(y^2−9)(y^2+9) is divisible by 9.

Mathematics
1 answer:
Mariana [72]3 years ago
4 0

Answer:

Step-by-step explanation:

y4−

(y2−9)(y2+9)

9

Distribute:

=y4+

−1

9

y4+9

Combine Like Terms:

=y4+

−1

9

y4+9

=(y4+

−1

9

y4)+(9)

=

8

9

y4+9

Answer:

=

8

9

y4+9

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Which expression shows how to multiply 5x381 by using place value and exxpanded form?
Dovator [93]
<span><span>1.       </span>We have the given number = 5 x 381
Let’s show how to multiply this given equation using its expanded form and place value
=> 5 x 381
since we’re multiplying, we will start with the ones value which is 1
=> 5 x 1 = 5
Second is on the tens value
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Third is the hundreds value
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Now, we already have the answer to each values. Add
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=> 1 905</span>



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2 years ago
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