Write 98765 in scientific notation.

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Find the distance between (7,-6) and (-3,-9)