Question

$x ^{2} - 4x - 45$


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Answer 1

Answer:

x²-4x-45

x²-9x+5x-45

x(x-9)+5(x-9)

(x+5)(x-9)

Answer 2

Answer:

$*x{}^{2} - 4x - 45 \\ = x {}^{2} + 5x - 9x - 45 \\ = x(x + 5) - 9(x + 5) \\ = (x - 9)(x + 5)$

hope it helps.

ThankU

have a great day ahead.