Question

Use the following to expand
(X+3)(x-5)

Answer 1

Answer:

(X+3)(x-5)

X(x-5)+3(x-5)

x²-5x+3x-15

x²-2x-15

Answer 2

Answer:

$= (x + 3)(x - 5) = 0\\ = x(x - 5) + 3(x - 5) = 0 \\ = x {}^{2} - 5x + 3x - 15 = 0 \\ = x(x - 5) + 3(x - 5) = 0 \\ = (x - 5)(x + 3) = 0 \\ \\ x = 5 \\ x = - 3$

Step-by-step explanation:

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