Mathematics, 01.12.2019 08:31 heyysn3858
Let x y be a real number. if x * y = x (x-y) then what is the value of 2 * (7 * 1)?
Answers: 1
is -80
![\begin{array}{l}{\text {So, } 7 \times 1=7(7-1) \quad[\text {from given rule }]} \\\\ {\rightarrow 7 \times 1=7 \times 6} \\\\ {\rightarrow 7 \times 1=42} \\\\ {\text {Now, the required expression is modified as } 2 \times 42} \\\\ {\text {Then, } 2 \times 42=2(2-42)=2(-40)=-80} \\\\ {\text {Hence, the value of } 2 \times(7 \times 1)=-80}\end{array}](/tpl/images/0398/1038/ada11.png)
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Let x y be a real number. if x * y = x (x-y) then what is the value of 2 * (7 * 1)?...
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