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Simplify the expression. Write the result using positive exponents only.(x-7)-3

Add or subtract. Assume all variables represent positive real numbers.8 – 2

Solve the equation.x2 + 3x = 40

Solve the equation. + 5 = x

Perform the indicated operation. Write the result in the form a + bi.(3 + 8i) – (-5 + i)

Solve the equation.(x – 7)2 = 4

Solve the equation.2×2 + 14 = 0

Solve the equation. 6x – – 5x = +

Solve the equation.(x – 11)2 = -4

Perform the indicated operation. Write the result in the form a + bi.(5 + 4i) + (7 – 4i)