Question

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Answer 1

a)4x²y³

b)-5/4xy³

c)6x

d)57/10x²

Answer 2

a, \(\left(-1+5-11\right)x^2y^3z=-7x^2y^3z\)

b, \(\left(1-\dfrac{1}{2}+\dfrac{1}{4}-2\right)xy^3=-\dfrac{5}{4}xy^3\)

c, \(\left(3-12+22-7\right)x=6x\)

d, \(\left(1-6-\dfrac{1}{5}-\dfrac{1}{2}\right)x^2=-\dfrac{57}{10}x^2\)