The coefficient of x^3 in (2x – 3y) (4x^2 + 6xy + 9y^2 ) is
The coefficient of x3 in (2x – 3y) (4x2 + 6xy + 9y2 ) is
A) 8
B) – 27
C) 12
D) 9
4 views
2 Answers
Correct option is (A) 8
\((2x-3y)\) \((4x^2+6xy+9y^2)\)
\(\because\) \(x^3\) will get by multiplying 2x with \(4x^2.\)
\(\therefore\) Coefficient of \(x^3\) in \((2x-3y)\) \((4x^2+6xy+9y^2)\) is \(2\times4=8.\)
4 views
Answered