Question

simplify.\\((2t^{2}-6t - 3)+(5t^{2}-t + 7)\\)

Explanation:

Step1: Remove parentheses

$2t^2 - 6t - 3 + 5t^2 - t + 7$

Step2: Group like terms

$(2t^2 + 5t^2) + (-6t - t) + (-3 + 7)$

Step3: Combine like terms

$7t^2 - 7t + 4$

Answer:

$7t^2 - 7t + 4$