How many real solution does the equation x^7+14x^5+16x^3+30x-560=0

Consider the given equation to be f(x) whose first derivative is positive for all real x. This implies f(x) is a strictly increasing function. Thus it has only 1 root.

put like terms together.orremember that the 45 becomes negative when moved to the other side.orthe minuses cancel out.

B. 2 1/2 feet. multiply 2.5 inches by 12 to get thirty inches then divide by 12 to get 2.5 feet