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.