Question

(-a+5)^3 please. Thanks​

Answer 1

Answer:

-a³+125

Step-by-step explanation:

First you need to expand it with the formula-

(a-b)³ = (a-b)(a²+ab+b²)

Rewrite the above the sum as follows-

(5-a)³

= (5-a)(5²+5a+a²)

=(5-a)(25+5a+a²)

Now multiply the polynomials

=125+25a+5a²-(25a+5a²+a³)

=125+25a+5a²-25a-5a²-a³

Cancel those which are possible

=125-a³

=-a³+125

And this is how the answer arrives :)

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