Question

plz help this sum
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1)
$\frac{1}{2} {x}^{2} yz \: \frac{3}{2} {x}^{2} yz \: - \frac{5}{4} {x}^{2} yz$

Answer 1

x2yz(1/2×3/2-5/4)
=-1/2x2yz