"Question 18 Find and correct the errors in the statement: 3x / 3x + 2 = 1/2
Class 8 Factorisation Page 229"
Answers
Error 1
Coefficient 1 of a term is usually not written. So
we often ignores that. But while adding like terms, we should include it in the
sum.
Error 2
When we multiply the expression enclosed in a
bracket by a constant (or a variable) outside, we usually applied the
multiplication to first term only. This is wrong calculation. Each term of the
expression has to be multiplied by the constant (or the variable).
Error 3
when we square a monomial, we usually ignored
the numerical coefficient. This is wrong method. The
numerical coefficient and each factor has to be squared.
Error 4
when we square a binomial, we usually do not
apply the proper identity. This is wrong approach. The right identity should be
used.
Error 5
While dividing a polynomial by a monomial, We usually don’t divide each term of the polynomial in the numerator by the monomial in the denominator.
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Solution:
LHS= 3x/(3x+2)
RHS =1/2
LHS≠ RHS
The correct statement is:
3x/(3x+2) =3x/(3x+2)
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Hope this will help you....