Square root 3a-2 = square root a/b (make b the subject)

b =

Step-by-step explanation:

Given

=

Clear the radicals by squaring both sides

( )² = ( )², that is

3a - 2 = ( multiply both sides by b )

b(3a - 2) = a ← divide both sides by (3a - 2)

b =

b = a/(3a-2)

Step-by-step explanation:

(3a-2)^½ = (a/b)½

Square both sides

3a - 2 = a/b

Reciprocate both sides

1/(3a-2) = b/a

b = a/(3a-2)

i'm not sure i quite understand, could you provide more information?

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!