If x+3 is a factor of x^3-x^2-10x+A. What is the value of A?

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Step-by-step explanation:

Let denote a constant (a number, rather than a variable like .)

Let denote an expression about (for example,

By the factor theorem, if is a factor of , then . In other words, if all mentions of in the expression are replaced with , then the expression should evaluate to zero.

is equivalent to . That is: .

Replace all mentions of in by to get:

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That should evaluate to zero. Therefore: . Solve for to get .

what is the answer?

i’m here for points.