# Expressions

Find out value of expressions if a = -1, b =2:

x=b - 2a - ab

y=a

z=a

w=a + b + a

x=b - 2a - ab

y=a

^{3}- b^{2}- 2abz=a

^{2}b^{3}- a^{3}b^{2}w=a + b + a

^{3}- b^{2}### Correct answer:

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