Question

if x=2,y=-1,to find the numerical value of the expression x power 2 y-xy is​

Answer 1

GIVEN THAT:-

x=2

y=-1

SOLUTION:-

${x}^{2y \: - xy} \\ from \: the \: values \: of \: x \\and \: y \\ {2}^{(2 \times - 1) - ( - 1)(2)} \\ = {2}^{ - 2 + 2 } \\ = {2}^{0 } \\ = 1 \: \: \: \: \: \: \: \: \: \: \: \: \: answer$