Question

all formula for algebraic expression
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Answer 1

Step-by-step explanation:

a+b=b+a

a(b)=b(a)

a+(b+c)=(a+b)+c

a(b+c)=ab+ac

a-(b-c)=(a-b)+c

a(b-c)=ab-ac

a+(b-c)=(a+b)-c

a-(b+c)=(a-b)-c.

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Answer 2

Step-by-step explanation:

a2 – b2 = (a – b)(a + b)

(a+b)2 = a2 + 2ab + b2

a2 + b2 = (a – b)2 + 2ab.

(a – b)2 = a2 – 2ab + b2

(a + b + c)2 = a2 + b2 + c2 + 2ab + 2ac + 2bc.

(a – b – c)2 = a2 + b2 + c2 – 2ab – 2ac + 2bc.

(a + b)3 = a3 + 3a2b + 3ab2 + b3 ; (a + b)3 = a3 + b3 + 3ab(a + b)

(a – b)3 = a3 – 3a2b + 3ab2 – b3