Respuesta :

hillqryc

Answer:

-3x^2-10x+6

Step-by-step explanation:

the first mistake would be writing the 4x^2 as positive when it's supposed to be negative. the 1 is also supposed to be positive. correct difference would be:

(x^2-10x+5)-(4x^2-1)

=(x^2-4x^2)-10x+5+1

=-3x^2-10x+6

inspirationalgdandyt

Answer:

Mistake in step 2

Step-by-step explanation:

(x^2-10x+5)-(4x^2-1)

x^2-10x+5-4x^2+1

-3x^2-10x+6

-(3 x^2 + 10 x - 6)

There is a mistake in step 2 in the picture,

-(4x^2-1)

Here, -*- =+ and -*+=-, this is done incorrectly here,