Question

All the identities of polynomial

Answer 1

1.(x+a)(x+b)=x²+(a+b)x+ab
2.(x+y)²=x²+y²+2xy
3.(x-y)²=x²+y²-2xy
4.(x+y)(x-y)=x²-y²
5.(x+y+z)²=x²+y²+z²+xy+yz+zx
6.(x+y)³=x³+3x²y+3xy²+y3 / x³+3xy(x+y)+y³
7.(x-y)³=x³-3x²y+3xy²-y³ / x³-3xy(x-y)-y³
8.x³+y³=(x+y)(x²-xy+y²) / (x+y)³-3xy(x+y)
9.x³-y³=(x-y)(x²+xy+y²) / (x-y)³+3xy(x-y)
10.x²+y²=(x+y)²-2xy
11.x²-y²=(x-y)²+2xy
12.x+y=√(x-y)²+4xy
13.x-y=√(x+y)²-4xy
14.x³+y³+z³-3xyz=(x+y+z)(x²+y²+z²-xy-yz-zx) / (x+y+z)[(x²+y²+z²)-(xy+yz+zx)]
15.If x+y+z=0 ,then x³+y³+z³=3xyz

Answer 2

Step-by-step explanation:

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