If the equation ax^2+bx+c=0 is not altered when each of the coefficient is increased by the same quantity. Then x^2+x+2=
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Solution
This can happen only if coefficients are equal and the coefficients of first equation are negative of the coefficients of second equation ,ie -ax^2- ax-a=0 ...(1) ax^2+ax+a=0 ....(2) All the coefficients of equation 1 is added by same number 2a. The equation can be simplified by dividing coefficients by a. The new equation will be x^2+x+1=0 The question given is x^2+x+2=? The answer is x^2+x+2=(x^2+x+1)+1=(0)+1 The answer is 1.