Factorize by splitting the middle term
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(A) x2 + 14 x + 45
x2 + 9x + 5x + 45
x(x + 9) + 5 (x+9)
(x + 9) (x+5)
(B) x2 + 4x - 45
x2 +9x - 5x - 45
x (x +9) -5 (x + 9)
(x + 9) ( x- 5)
(C) x2 - 4x - 45
x2 -9x +5x - 45
x (x - 9) + 5 (x - 9)
( x- 9) (x + 5)
(D) x2 - 14x + 45
x2 - 9x - 5x + 45
x(x -9 ) -5 ( x - 9 )
( x - 9 ) ( x - 5 )
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