Question

In the expansion of (x-5)^3 the cofficent of x^2 is​

Answer 1

Answer:

(x-5)^3=x^3-5^3-3(x)(5){x-5}

=x^3-125-15x{x-5}

=x^3-125-15x^2+75

=x^3-50-15x^2

• The coefficient of x^2 in (x-5)^3 is -15.

Answer 2

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