The first image is the questions and the other 4 are the answers.
which of the triangles does not have the same base length as the others?

Explain step-by-step how to simplify -5(2x – 3y + 6z – 10).

What is the binomial expansion of (2x-3)^5

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.