Math, asked by yeet62, 8 months ago

use the formula to expand (x - 7) cube​

Answers

Answered by student22235
2

The coefficient of x7 in the expansion of

is : 144

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Answered by wwwuamuam
4

Answer:

(x-7)^3 = x^3 - 7^3 -3x^2 (7) +3 (7)^2 x

=) x^3 - 343 -21x^2 + 3 (49) x

=) x^3 - 343 -21x^2 + 147x

=) (x-7)^3 = x^3 -21x^2 + 147x -343

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