factorise 2x^2+9x+4 by splitting the middle term(or all questions)
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given p(x) = 2x² + 9x + 4
SUM = 9
PRODUCT = 8
NUMBERS = 8,1
therefore; 2x² + x + 8x + 4
x (2x + 1) + 4 (2x + 1)
(x+4) (2x + 1)
; x = -4 / x = -½
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