Respuesta :

Answer: -5t^2 -4t -7

Step-by-step explanation:

(-t^2 -6t -3) + ( -4t^2 + 2t -4)

To find the sum, we need to open the brackets

Note: the signs are very important to be taken notice of

Hint : - * - = +

- * + = -

+ * + = +

= - t^2 - 6t - 3 - 4t^2 + 2t - 4

Collecting the like terms

= -t^2 - 4t^2 - 6t + 2t - 3 -4

= -5t^2 - 4t - 7

We can't get more futher,unless we want to find the values of t using completing the square method or through algebra equation.

it is -5t^2 - 4t - 7 to the mf test