Question

solve (x+2) ³ please solve..........​

Answer 1

Answer:

(a + b)^3  =  a^3 + 3*a^2*b + 3*a*b^2 + b^3

Substitute x for a and 2 for b. 

(x + 2)^3=  x^3 + 3*(x^2)*(2) + 3*(x)*(2^2) +2^3

=  x^3 + 6x^2 + 3*(x)*(4) + 8

=  x^3 + 6x^2 + 12x + 8

Hope this helps.

Have a nice day !

(*(a + b)^3  =  a^3 + b^3 + 3ab(a + b) you can use this formula too , mate ).

Answer 2

SOLUTION

TO DETERMINE

${(x + 2)}^{3}$

FORMULA TO BE IMPLEMENTED

We are aware of the identity that

(a + b)³ = a³ + 3a²b + 3ab² + b³

EVALUATION

${(x + 2)}^{3}$

$= {x}^{3} + 3 {x}^{2} \times 2 + 3 \times x \times {2}^{2} + {2}^{3}$

= x³ + 6x² + 12x + 8

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