Question

Subtract: (-14z^2+1)-(-13z^2)

Answer 1

I guest it is -z^2+1

Answer 2

$( - 14 {z}^{2} + 1) - ( - 13 {z}^{2} ) \\ = - 14 {z }^{2} + 1 + 13 {z}^{2} \\ = ( - 14 {z}^{2} + 13 {z}^{2} ) + 1 \\ = - {z}^{2} + 1$
The answer is -z^2+1