A is x+y B is x-y find ab
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ab = (x+y)(x-y)
= x²-xy+xy-y²
=x²-y²
Answered by
0
Answer:
x²-y²
Step-by-step explanation:
a=x+y
b=x-y
ab=(x+y)(x-y)
ab=x²-xy+xy-y²
ab=x²-y²
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