Question

plz help me im 6th class ,show all thw square roots formulae.like a+b whole square =a square+b square-2ab

Answer 1

(a+b)²=a²+b²+2(a)(b)
(a-b)²=a²+b²-2ab
(a²-b²)=(a+b)(a-b)
(x-a)(x+b)=x²+(a+b)x(ab)