Question

Use factor theorem to determine whether x+3 is factor of x² + 2x - 3 or not.
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Answer 1

$\huge\boxed{\fcolorbox{red}{ink}{SOLUTION:}}$

$Let \: p \: (x) = {x}^{2} + 2x -3 \\ \\ \\ \\ divisor = x + 3 \\ \\ \\ \\ p( - 3) = ( { - 3}^{2} ) + 2 \times( - 3) - 3 \\ \\ \\ \\ = 9 - 6 - 3 = 0 \\ \\ \\ \\ by \: factor \: theorem \\ \\ \\ \\ (x + 3) \: is \: a \: factor \: of \: {x}^{2} + 2x -3$

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Answer 2

Answer:

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