Question

expand the following (x²-y³)​

Answer 1

Answer:

We know that (a+b+c)

2

=a

2

+b

2

+c

2

+2ab+2bc+2ca

Here, a=x,b=2y,c=−z

∴(x+2y−z)

2

=x

2

+(2y)

2

+(−z)

2

+2.x.2y+2.2y.(−z)+2.(−z).x

= x

2

+4y

2

+z

2

+4xy−4yz−2xz

Step-by-step explanation:

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