Which expressions represent a quadratic expression in factored form? (x − 3)(x + 2) 5(x + 9) (x − 1)(x − 1) x2 + 8x (x + 4) − (x + 6)

Can someone answer this question? : )

How to use order of operation in 20 divide by 4 multiply 5 = 1

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.