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If `a\ a n d\ b` are respectively the sum and product of coefficients of terms in the expression `x^2+y^2+z^2-x y-y z-z x ,` then `a+2b=` 0 (b) 2 `-2` (d) `-1`

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RD SHARMA-ALGEBRAIC EXPRESSIONS-All Questions
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  8. Which of the following is not a monomial? 2x^2+1 (b) 3x^4 a b (d...

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  9. The sum of the coefficients in the monomials 3a^2b and -2a b^2 is 5...

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  10. The coefficient of x^2 in -5/3\ x^2y is equal to :- (a)-5/3 (b) -5/3...

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  13. The product of the coefficients of terms in -4/3a b^2+1/4b c^2+3c a...

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  14. If a\ a n d\ b are respectively the sum and product of coefficients...

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  16. The sum of the values of the expression 2x^2=2x+2 when x=-1 and x=1...

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