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Let $A = 2 x^{2} - 3 x + 4, B = x^{2} + x - 1$ and $C = 3 x^{2} - 2 x + 5$ . Find $A + B - C$ .

Class 8Adding and Subtracting ExpressionsAlgebra

A $2$
B $- 4 x - 2$
C $- 2$
D $6 x^{2} - 4 x + 8$

Step-by-Step Solution

x^{2} : 2 + 1 - 3 = 0

;

x : - 3 + 1 + 2 = 0

; constants:

4 - 1 - 5 = - 2

. So

A + B - C = - 2

.

Answer: C)

- 2

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