Quote:Express ( 16/81) to the -3/4 as a reduced rational number. 2. Simplify the radical express, The square root of 125x squared minus 2x(square root)5x
We can write 16/81 as (2/3)^4 so
[(2/3)^4]^(-3/4) = (2/3)^-3 = (3/2)^3 = 27/8 answer
The second question is bit unclear please write it using brackets where needed , i know its difficult to write it over here but try as much as you can
factorise
Quote:Please help!
2(x+7)^3(4x-3)+3(x+7)^2(4x-3)^2
Taking (x+7)^2 and (4x-3) as common factors we have
(x+7)^2(4x-3) [2(x+7) +3(4x-3)]
(x+7)^2 * (4x-3) * (2x+14+12x-9)
(x+7)^2 * (4x-3) * (14x+5)
Hope this helps
College Algebra Help
Please help!
2(x+7)^3(4x-3)+3(x+7)^2(4x-3)^2