Question

please answer all the questions which are given above​

Answer 1

( c + b ) ^ 2 - a ^( c + b + a ) ( c + b + a )

2. a²-b²+2bc-c² =a² - (b² -2bc +c²)

                    =a² - (b-c)²

                    =(a-(b-c))(a+(b-c))  [ using identity a²-b² =(a-b)(a+b) ]

 

                   = (a-b+c)(a+b-c)

hence.,a²-b²+2bc - c²  = (a-b+c)(a+b-c)

3. (a+2b)+(a+2b)(a^2-2ab+4b^2)

=(a+2b)(1+a^2-2ab+4b^2)

a^3+b^3=(a+b)(a^2-ab+b^2). since a^3+8b^3=a^3+(2b)^3

4. x^2 - 8/x

= (x^3 - 8 )/x

= (x-2) ( x^2 + 2x + 4) / x

= (x-2)(x+2+4/x)

for 5 question I have done in my note

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Answer 2

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