Question

Answer 1

a: \(=x^2yz\left(-\dfrac{1}{2}+5-1\right)=\dfrac{7}{2}x^2yz=\dfrac{7}{2}\cdot\left(-1\right)^2\cdot2\cdot\left(-1\right)=7\cdot\left(-1\right)=-7\)

b: \(=-5x^2z=-5\cdot\left(-1\right)^2\cdot\left(-2\right)=10\)

c: \(=xy^2\left(5+\dfrac{1}{2}-3\right)=\dfrac{5}{2}xy^2=\dfrac{5}{2}\cdot2\cdot1^2=5\)

d: \(=y^2z^2\left(-2+8-1\right)=5y^2z^2=5\cdot\left(-2\right)^2\cdot0=0\)