Which expression shows 2x² + 18 factored completely

In what form is the following linear equation written y=9x+2

Svetlana's hair is 4 4 centimeters ( cm cm) long. her hair grows 1 . 5 cm 1.5cm per month. svetlana wants her hair to be less than 1 6 cm 16cm long. write an inequality to determine the number of months, m m, svetlana can allow her hair to grow so that it is less than 1 6 cm 16cm long.

If x-1 and x+3 are the factors of x3+10x2+ax+b find a and b