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anonymous
 4 years ago
olve 4x2 = 12x + 40.
anonymous
 4 years ago
olve 4x2 = 12x + 40.

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bahrom7893
 4 years ago
Best ResponseYou've already chosen the best response.2Try this one yourself, come on!

bahrom7893
 4 years ago
Best ResponseYou've already chosen the best response.2first step should be moving everything over to one side and dividing everything by 4

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0Thats the Point, I dont know how.

bahrom7893
 4 years ago
Best ResponseYou've already chosen the best response.2Ok, i'll show u this ex. Try the next one: 4x^2 = 12x + 40 4x^2  12x  40 = 0

bahrom7893
 4 years ago
Best ResponseYou've already chosen the best response.2now divide everything by 4: x^2  3x  10 = 0

bahrom7893
 4 years ago
Best ResponseYou've already chosen the best response.2Now use the discriminant formula: D = (3)^2  4*(1)*(10) = 9 + 40 = 49

bahrom7893
 4 years ago
Best ResponseYou've already chosen the best response.2x1 = (b  sqrt(D))/(2a) x2 = (b +sqrt(D))/(2a)

bahrom7893
 4 years ago
Best ResponseYou've already chosen the best response.2x1 = (3  7)/2 = 2 x2 = (3+7)/2 = 5
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