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lalaland_lauren
 one year ago
If (6y − 11)(6y + 11) = ay2 − b, what is the value of a?
lalaland_lauren
 one year ago
If (6y − 11)(6y + 11) = ay2 − b, what is the value of a?

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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2hints: difference of square rule (xy)*(x+y) = x^2  y^2 (3z+2x)*(3z2x) = (3z)^2  (2x)^2 = 9z^2  4x^2 (2y+5)*(2y5) = (4y)^2  (5)^2 = 16y^2  25 none of these are the answer. They're just examples

lalaland_lauren
 one year ago
Best ResponseYou've already chosen the best response.1That didn't really help me :( can I just get the answer?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2Difference of squares rule \[\Large (\color{red}{x}  \color{blue}{y})(\color{red}{x} + \color{blue}{y}) = (\color{red}{x})^2  (\color{blue}{y})^2\] \[\Large (\color{red}{6y}  \color{blue}{11})(\color{red}{6y} + \color{blue}{11}) = (\color{red}{6y})^2  (\color{blue}{11})^2 = ???\] I'll let you do that last part

lalaland_lauren
 one year ago
Best ResponseYou've already chosen the best response.1Would it be 36y^2 121?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2yes it would be

lalaland_lauren
 one year ago
Best ResponseYou've already chosen the best response.1so a would be 36
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