Wednesday

April 16, 2014

April 16, 2014

Posted by **gandhish** on Monday, March 18, 2013 at 12:32pm.

- math -
**Steve**, Monday, March 18, 2013 at 1:38pm(2x+1)^12

= (2x)^12 + 12(2x)^11 + ...

= 2^12 x^12 + 12*2^11 x^11 + ...

(x+1)^18 = x^18 + 18x^17 + 9*17 x^16 + ...

= 2^12 x^30 + (18*2^12 + 12)x^29 + ...

so, 18*2^12 + 12 = 73740

- math -
**Steve**, Monday, March 18, 2013 at 1:45pm(2x+1)^12 = 2^12 x^12 + 12*2^11 x^11 + ...

(x+1)^18 = x^18 + 18x^17 + ...

multiply the two expansions to get

2^12 x^30 + (18*2^12 + 12*2^11) x^29 + ...

so, we have 18*2^12 + 12*2^11 = 98304

**Related Questions**

math - Find the coefficient of x in the expansion of (2x+5)^6

Math - 2x^3 + 3x^2 + x + 1 dx --------------------- -2x + 1 [2x^3 + 3x^2 + x...

maths - In the expansion of (1-2x)^11 the coefficient of x^3 is k times the ...

Calculus - Find the constant term in the expansion of [x + (3/x squared)]^9 Find...

Math - Find the distance between P(-4,3) and the line with equation: 2x - 5y = -...

maths - The coefficient of x^2 is 69 in the expansion of (1-ax)^24, where a>0...

Physics - In my lab of linear expansion, I need to find out the coefficient of ...

MATH - find the coefficient of x^5 in the expansion (x+2)(x+1)^8

algebra - Solve the given equations: 1. |2x-5|= 29 Answer: x=17 or is it...

Probability - Roll 3 dice. What is the probability of getting a sum of: A) sum ...