Pls help geometry hw due in 30 minutes

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

In the following situation, determine whether you are asked to determine the number of permutations or combinations. then do the calculation how many ways are there to pick a starting five from a basketball team of twelve members? a. permutation; ps - 2520 b. combination; 1c, - 792 c. combination: 2cs - 2520 d. permutation; ps - 95040

Ineed to know the answer right now! !