Afather is 60 years old and his son is half his age how old was the boy when his father was four times his age

If u good at math hit me up on insta or sum @basic_jaiden or @ and

Me! i will mark brainliest! i don't get polynomials and all that other stuff. so this question is really hard. multiply and simplify.(x - 4) (x^2 – 5x – 6)show your

Plz ( true - false) all triangles have interior angles whose measure sum to 90.