Solve the equation. (2z – 4)2 + 12 = 4

Solve the inequality. Write your answer in interval notation.-7 – 3(2x + 1) < x – (-7 – x)

Factor the sum of cubes.8y3 + z3

The reciprocal of a number is added to 27, and the result is the quotient of 38 and the number. Find the number.

Factor by grouping.6tz – 22z + 18t – 66

Factor out the greatest common factor.30×4 – 48×2 + 15x

Find the value of n so that the expression is a perfect square trinomial and then factor the trinomial.x2 + 10x + n

Solve the system.-11x – 2y = 811x + 2y = 121

The current in a wire varies directly as the voltage and inversely as the resistance. If the current is 9 A (amps) when the voltage is 90 V (volts) and the resistance is 10 Ω (ohms), find the current when the voltage is 195 V and the resistance is 10 Ω .

Solve the radical equation, if possible.5t =