Use the formula to expand-28-c3

We know that (x + y)3 = x3 + 3x2y + 3xy2 + y3. Comparing (8 + c)3 with (x + y)3 , we get: x = 8 and y = c Substituting these in the above formula: (8 + c)3 = 83 ...

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Byju's Answer

Standard VIII

Physics

Static Friction

Use the formu...

Question

Use the formula to expand:

(2) (8 + c)³

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Solution

We know that (x + y)³ = x³ + 3x²y + 3xy² + y³.
Comparing (8 + c)³ with (x + y)³ , we get:
x = 8 and y = c
Substituting these in the above formula:
(8 + c)³ = 8³ + 3 × c² × 8 + 3 × c × 8² + c³
= 512 + 24c² + 192c + c³

Suggest Corrections

Use the formula to expand: (2) (8 + c)3

We know that (x + y)3 = x3 + 3x2y + 3xy2 + y3. Comparing (8 + c)3 with (x + y)3 , we get: x = 8 and y = c Substituting these in the above formula: (8 + c)3 = 83 + 3 × c2 × 8 + 3 × c × 82 + c3 = 512 + 24c2 + 192c + c3

Use the formula to expand:

(2) (8 + c)³

We know that (x + y)³ = x³ + 3x²y + 3xy² + y³.
Comparing (8 + c)³ with (x + y)³ , we get:
x = 8 and y = c
Substituting these in the above formula:
(8 + c)³ = 8³ + 3 × c² × 8 + 3 × c × 8² + c³
= 512 + 24c² + 192c + c³