I need help with this question... I suck very much at mathematics. CAN SOMEONE HELP ME???

Manuela claims that and are congruent. which statement best describes her claim? she is incorrect because the segments do not have the same orientation. she is incorrect because the segments do not have the same length. she is correct because the segments have the same length. she is correct because the segments have the same orientation.

Given the expression (7 ? 4i) ? (2 + 6i), perform the indicated operation and write the answer in the form a + bi.

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)