7x2 + 5x -18=0 (by factorisation method)
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Answer:
The factors are (7x - 9 ) and ( x + 2 ) respectively.
Step-by-step explanation:
7x² +5x -18 = 0
by middle term splitting,
sum = 5 = 14 + -9
product = -126 = 14 × -9
7x² + 14x - 9x - 18 = 0
7x ( x + 2 ) - 9 ( x + 2 ) = 0
(7x - 9 ) ( x + 2 ) = 0
=> The factors are (7x - 9 ) and ( x + 2 ) respectively.
Hope this will help you.
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