Posted by **John** on Saturday, March 15, 2008 at 9:58pm.

i need help solving this one (x + 4)^2/3= 9 a) 13 b) 23;-31 c) 5 d) 31;-31

also sove check for extraneous solutions

(6x-5)^1/2 = (7+ 4x)^1/2

a) 1/6 b) -9 c) 6 or d) 1/5

- alg -
**Reiny**, Saturday, March 15, 2008 at 10:51pm
(x + 4)^2/3= 9

[(x + 4)^2/3]^(3/2)= 9^(3/2)

x+4 = 27

x = 23

do the second one by squaring both sides

- alg -
**John**, Sunday, March 16, 2008 at 11:16am
ok so for this one i need help solving this one (x + 4)^2/3= 9 a) 13 b) 23;-31 c) 5 d) 31;-31

it would be c 23 or -31 right?

for for the 2nd one i got -9?

but i don't think i did it right

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