Someone pls help me with this I seriously don't understand this i will mark you as brainliest if you answer correctly pls and ty​

Which expression is equivalent to the expression below? (6c^2 + 3c) / (-4c + 2) / (2c + 1) / (4c - 1)a. 3c(2c-1) / (2c + 1)b. -3c(2c-1)^2 / (2c + 1)^2c. 3cd. -3c(just took the test its d. -3c)

Піf x = y and y= z, which statement must be true? оа. -x = -2 b. x= z ос. —x = 2 od. 2= x

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0