book Maths Puzzle Numerical Ability

Please, I need help with these problems. I confused on how to get started on it,
a)3y^2-4y-4

b)2x^2+12x-7=-2

c)[(x/3+4)]^2=27
marie

Read Solution (Total 0)

book Other Question

Curly can do a job in 30 min, Larry can do it in 40 min, and Moe can do it in 60 min. How long will it take them if they work together? Write 0.8(with a line over the 8) as a fraction in lowest terms. How do I do this? Thank you.