Question

If a, b, c are respectively the coefficients of x^2 in -x^2, 2x^2 + x and 2x - x^2 respectively. Then a + b + c = ?

Answer 1

Answer:

a = coefficient of x^2 in -x^2 = -1

b= coefficient of x^2 in 2x^2 + x = 2

c= coefficient of x^2 in 2x- x^2 = -1

a+b+c = -1+2-1 = 0

Answer 2

The value of a + b + c = 0

Given :

a, b, c are respectively the coefficients of x² in - x² , 2x² + x and 2x - x² respectively

To find :

The value of a + b + c

Solution :

Step 1 of 2 :

Find the value of a, b, c

a = Coefficient of x² in - x² = - 1

b = Coefficient of x² in 2x² + x = 2

c = Coefficient of x² in 2x - x² = - 1

Step 2 of 2 :

Find the value of a + b + c

a + b + c

= - 1 + 2 - 1

= 0

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