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Answer 1

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iv) 5X - 7 ) ( 2X + 4 ) = 10X × X - PX - 28

5X ( 2X + 4 ) -7 ( 2X + 4 ) = 10X² - PX - 28

10X² + 20X - 14X - 28 = 10X² - PX - 28

10X² - 10X² + 6X - 28 + 28 + PX = 0

6X + PX = 0

X ( 6 + P ) = 0

6 + P = 0

P = -6

v) option B