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Mathematics

Grade10

Easy

Question

Find the 4^th term.
$left parenthesis x minus 2 y right parenthesis to the power of 12$

$1760 x^{9} y^{5}$
$- 1760 x^{9} y^{3}$
$1760 x^{7} y^{3}$
$- 1760 x^{5} y^{5}$

hint Hint:

Use the binomial expansion to find the 4th term.

The correct answer is: $negative 1760 x to the power of 9 y cubed$

STEP BY STEP SOLUTION
$open parentheses x minus 2 y close parentheses to the power of 12 T h e space f o r t h space t e r m space i s space scriptbase C subscript 3 space x to the power of 9 end scriptbase presuperscript 12 space open parentheses negative 2 y close parentheses cubed$
$negative 1760 x to the power of 9 y cubed$

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