How to Simplify the following expression

-3x2+5-12x-149x2

To assess the opinion of students at the Ohio State University about campus safety, a reporter for the student newspaper interviews 15 students she meets walking on the campus late at night who are willing to give their opinion.

The present age of nitin is two times the present age of his sister pooja. After 7 years their ages will add to 68 years. Find their ages

Why is 6 over 8 greater than 5 over 8 but less than 7 over 8

42 costumers increased by 50% how do i solve it can you explain

2319 to nearest hundred

What is the formula of statistics?

What is 75 divided by 18723 in long divison

Solve the equation 1.2m=0.6

Describe how to simplify the expression 3^-6/3^-4

Which equation is equivalent to log5x3 - logx2 = 2?