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3 years ago

8

If a number is increased by 4, its square is increased by 64. Find the number

2 answers:

Anit [1.1K]3 years ago

5 0

Answer:

12

Step-by-step explanation:

12 - 4 = 8

The square of 8 is 64

quester [9]3 years ago

3 0

Answer:

6

Step-by-step explanation:

(n + 4)^2 = n^2 + 64

n^2 + 8n + 16 = n^2 + 64

8n = 48

n = 6

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liubo4ka [24]

Answer:

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Step-by-step explanation:

Step 1: Expand by distributing sum groups.

$3k(3k^{2} -5k-3)+4(3k^{2} -5k-3)$

Step 2: Expand by distributing terms.

$9k^{3} -15k^{2} -9k+4(3k^{2} -5k-3)$

Step 3: Expand by distributing terms.

$9k^{3}-15k^{2} -9k+12k^{2} -20k-12$

Step 4: Collect like terms.

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Step 5: Simplify.

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Answer:

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Step-by-step explanation:

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Read 2 more answers