Question

if a=1, b=-2 ,c=-1 ,,,,then show 7a + b+c=2abc

Answer 1

Here,

a=1,b=-2,c=-1

then,we have to show,

7a+b+c=2abc

We put these values in question,

7(1)+(-2)+(-1)=2(1)(-2)(-1)

7-2-1=4

7-3=4=4

So,LHS=RHS

Hence proved..

HOPE IT HELPS YOU

Answer 2

$\huge {\underline{ \underline \mathfrak \purple{Answer}}}$

LHS = 7×1+(-2)+(-1)

= 7-2-1

= 4

RHS = 2×1×(-2)×(-1)

= 2×2

= 4

LHS = RHS