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KG1234
 2 years ago
solve for x: (4x3)^2=15
KG1234
 2 years ago
solve for x: (4x3)^2=15

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NickR
 2 years ago
Best ResponseYou've already chosen the best response.0so (4x3)^2=(4x3)(4x3) right

Hero
 2 years ago
Best ResponseYou've already chosen the best response.0(4x3)(4x3) = 4x(4x  3)  3(4x  3) = 16x^2  12x  12x +9 = 16x^2  24x + 9

NickR
 2 years ago
Best ResponseYou've already chosen the best response.0but its not = to 0 its =15

Hero
 2 years ago
Best ResponseYou've already chosen the best response.0(4x3)(4x3) = 4x(4x  3)  3(4x  3) = 16x^2  12x  12x +9 = 16x^2  24x + 9

NickR
 2 years ago
Best ResponseYou've already chosen the best response.0my bad see you already did that

NickR
 2 years ago
Best ResponseYou've already chosen the best response.0so now is there a common number that they are all divisible by?

KG1234
 2 years ago
Best ResponseYou've already chosen the best response.0wait im at 16x^224x+9=15 right?

NickR
 2 years ago
Best ResponseYou've already chosen the best response.0ya then add the 15 to get 16x^224x+24=0

NickR
 2 years ago
Best ResponseYou've already chosen the best response.0now find a common denominator

KG1234
 2 years ago
Best ResponseYou've already chosen the best response.0so does that then turn into 2x^23x=3=0?

Hero
 2 years ago
Best ResponseYou've already chosen the best response.016x^224x+9=15 16x^2  24x + 24 = 0 8(2x^2  3x + 3) = 0 2x^2  3x + 3 = 0 x^2  3/2 + 3/2 = 0 x^2  3/2x = 3/2 x^2 3/2x + 9/16 = 3/2 + 9/16 (x  3/4)^2 = 15/16 Solution is imaginary

KG1234
 2 years ago
Best ResponseYou've already chosen the best response.0the answer is 3 + or  the square root of 15 divided by4 but idk how to get it

NickR
 2 years ago
Best ResponseYou've already chosen the best response.0i would do the quadratic formula

KG1234
 2 years ago
Best ResponseYou've already chosen the best response.0b + or  the square root of b^2 4ac divided by 2a?

Hero
 2 years ago
Best ResponseYou've already chosen the best response.0\[\frac{b \pm \sqrt{b^2  4ac}}{2a}\]

KG1234
 2 years ago
Best ResponseYou've already chosen the best response.0i got it thanks to both of you!

Hero
 2 years ago
Best ResponseYou've already chosen the best response.0You got what? Mind sharing what you got?

KG1234
 2 years ago
Best ResponseYou've already chosen the best response.03 + or  the square root of 15 divided by 4

KG1234
 2 years ago
Best ResponseYou've already chosen the best response.03+ or  i square root 15 divided by 4 sorry i forgot the "i"
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