Question

Help please you don’t know how much this means to me

Answer 1

Problem 5:

`db {}^(2) - ab {}^(2) = ab {}^(2) - ae {}^(2) \\ db {}^(2) = 2ab {}^(2) - ae {}^(2) \\ (ac + bc) {}^(2) = 2ab {}^(2) - ae {}^(2) \\ ac {}^(2) + bc {}^(2) + 2ac.bc = 2ab {}^(2) - ae {}^(2) \\ 2ac.bc = ab {}^(2) - ae {}^(2)`

`2ac.bc = ab {}^(2) - (ac {}^{} - ce) {}^(2) \\ 2ac.bc = ab {}^(2) - ac {}^(2) + 2ac.ce - ce {}^(2) \\ 2ac.bc = ab {}^(2) - ac {}^(2) - cb {}^(2) + 2ac.ce \\ but \: ab {}^(2) - ac {}^(2) - cb {}^(2) = 0 \\ 2ac.bc = 2ac.ce \\ bc = ce \\ which \: is \: true`