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anonymous
 5 years ago
Find the unknown:
(5y2)^2+11=18
anonymous
 5 years ago
Find the unknown: (5y2)^2+11=18

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bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0take 1 out from (5y  2)^2:

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0(1[5y+2])^2 = [5y+2]^2

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0so now: [5y+2]^2 = 18  11 (move 11 to the right)

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0(5y+2)^2 = 7 25y + 20y + 4 = 7

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0move 7 to the left: 25y + 20y +4 7 = 0 25y + 20y  3 = 0

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0Now find discriminant: D = b^2  4ac, where b = 20, a = 25 and c = 3

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0what did you do with the 1 after you factored it out?

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0Oh it was inside a square right, so: (1[5y+2])^2 = (1)^2 [5y+2]^2 = 1 * [5y+2]^2 = [5y+2]^2

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0Oh it was inside a square right, so: (1[5y+2])^2 = (1)^2 [5y+2]^2 = 1 * [5y+2]^2 = [5y+2]^2

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0sorry for late response, i just keep crashing..

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.025y + 20y  3 = 0 D = b^2  4ac, where b = 20, a = 25 and c = 3 D = 400 + 300 = 700

bahrom7893
 5 years ago
Best ResponseYou've already chosen the best response.0okay np.. can you please click on become a fan, thanks!
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