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anonymous
 one year ago
MEDAL!!
ALGEBRA 2
19. l4b8l+l1b^2l +2b^3;b=2
anonymous
 one year ago
MEDAL!! ALGEBRA 2 19. l4b8l+l1b^2l +2b^3;b=2

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butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.1\[\left 4(2)  8 \right + \left 1(2)^2 \right + 2(2)^3 \]

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.1You are basically solving the above ^ Since they've told you that " b = 2" , this means that you just sub (plug) in 2 where the "b" is. Basically REPLACE all the "b's" with 2 and solve :) BUT you want to take note of the absolute value sign also...

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.1So firstly, let's simplify the parts inside the first absolute sign " 4(2)  8 " What does 4(2)  8 = ?

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.1yes :) Now can you see how that part was BETWEEN the absolute value sign? Absolute value means you always take the POSITIVE of that value inside. So \[\left 4(2)  8 \right = \left 88 \right= \left 16 \right = 16 \]

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.1\[\left 1(2)^2 \right = ? \]

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.1remember, you take the "absolute value" of 5... So \[\left 1(2)^2 \right = \left 5 \right = 5 \] And now solve the last part: \[2(2)^3 = ? \]

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.1not quite. What does \[2^3 = ? \]

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.1err nope.. \[2^3 = 2\times2\times2 = ? \]

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.1yes and we wanted: \[2(2)^3 = 2\times2\times2\times2 = ?\]

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.12(2)^3 = 2 times 2 times 2 times 2 = 16

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.1So now we solved the three parts of this equation : \[\left 4(2) 8 \right + \left 1(2)^2 \right + 2(2)^3 \] \[= 16 + 5 + 16 = ? \]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0final answer is 37??

butterflydreamer
 one year ago
Best ResponseYou've already chosen the best response.1you're welcome :)
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